BOLT ASSEMBLY FOR FIREARMS

Description

FIELD

The present disclosure relates to the field of firearms and, more particularly, to detachable bolt handles.

BACKGROUND

Routine maintenance, component repairs, and cleaning procedures for firearms typically require disassembly. In most cases, this process necessitates the use of a tool. The disassembly process would be significantly simplified if it could be performed without the need for any tools.

SUMMARY

The present disclosure aims to provide a firearm with a bolt assembly that can be easily disassembled without requiring the use of a tool.

To this end, the bolt assembly is provided with a detachable bolt handle that connects several parts of the bolt assembly, pulling out the detachable bolt handle leading to the disassembly of the bolt assembly.

More specifically, the present disclosure relates to a bolt assembly for a firearm comprising:

• • a bolt carrier comprising a chamber, said bolt carrier defining a longitudinal axis A with a direction perpendicular to said longitudinal axis A being transverse or transversal,
  • a bolt carrier plug movably mounted along the longitudinal axis A in the chamber of the bolt carrier,
  • a detachable bolt handle mounted on the bolt carrier plug and on the bolt carrier in a locked position or in an unlocked position, with the movement of the bolt carrier plug allowing to lock or unlock the detachable bolt handle,
    said bolt carrier plug and bolt carrier respectively comprising a transverse groove and a transverse opening with the transverse groove and the transverse opening aligned, the detachable bolt handle being mounted inside the aligned transverse groove and opening with said detachable bolt handle acting as a connecting element between the bolt carrier plug and the bolt carrier allowing to assemble and disassemble the bolt assembly without requiring the use of a tool.

Preferably, the transverse groove and the transverse opening are respectively a transverse through-groove and a transverse through opening.

Preferably, the bolt carrier comprises a transverse stop extending at least partially into the chamber from a wall of the bolt carrier.

Preferably, the bolt carrier plug is provided with a longitudinal groove extending into a wall of the bolt carrier plug and comprises a spring housed inside the bolt carrier plug.

Preferably, the transverse stop is positioned to engage inside the longitudinal groove and to halt the spring when said spring is compressed by a longitudinal pressure applied to the bolt carrier plug towards the bolt carrier, for switching from the locked position to the unlocked position.

Preferably, the bolt carrier plug is provided in its wall with at least one first recessed area adjacent to the transverse groove, and wherein the detachable bolt handle is provided with a second recessed area accommodating at least partially the at least first recessed area when the detachable bolt handle is in the locked position.

Preferably, the first recessed area comprises two perpendicular surfaces with one longitudinal surface parallel to the longitudinal axis A and one transversal surface perpendicular to the longitudinal axis A and wherein the second recessed area comprises two perpendicular surfaces with one transversal surface perpendicular to the longitudinal axis A and one longitudinal surface parallel to the longitudinal axis, the transversal movement of the detachable bolt handle being obstructed by the interlocking of the longitudinal surface of the first recessed area with the longitudinal surface of the second recessed area in locked position.

Preferably, the bolt carrier plug is provided with two first recessed areas extending from two sides of the wall of the bolt carrier plug and wherein the second recessed area comprises two longitudinal surfaces interlocking each with a longitudinal surface in locked position.

Preferably, the first recessed area and the transverse groove are bordered by a vertical wall perpendicular to the longitudinal axis A, said vertical wall abutting against the transversal surface of the second recessed area in locked position.

Preferably, the detachable bolt handle is provided with a longitudinal through-groove extending through the second recessed area for housing components inside the bolt carrier and/or the bolt carrier plug.

Preferably, the bolt carrier plug is provided in its wall with at least one first recessed area adjacent to the transverse groove, and wherein the detachable bolt handle is provided with a longitudinal through-groove accommodating at least partially the first recessed area when the detachable bolt handle is in the locked position, the transversal movement of the detachable bolt handle being obstructed by the interlocking of the longitudinal surface of the first recessed area with the inner surfaces of the longitudinal through-groove in locked position and the transversal surface of the first recessed area abutting against the external surface of the detachable bolt handle in locked position.

Preferably, the detachable handle comprises an edge abutting against the external surface of the bolt carrier when the detachable bolt handle is in locked and unlocked position.

The present disclosure aims to provide a method for disassembling and assembling the bolt assembly comprising the following steps:

• • Unlocking the detachable bolt handle by applying a pressure along the longitudinal axis A to the bolt carrier plug so that said bolt carrier plug moves inside the chamber with the spring compressed against the transverse stop;
  • Pulling out the detachable handle whilst the pressure is still applied to the bolt carrier plug;
  • Releasing the applied pressure from the bolt carrier plug and pulling out the bolt carrier plug;
  • Pulling out at least one element disposed at least partly inside the bolt carrier.

Preferably, the method for disassembling and assembling the bolt assembly comprising the following steps:

• • Mounting the at least one element at least partly inside the bolt carrier,
  • Introducing the bolt carrier plug in the chamber of the bolt carrier and applying a pressure along the longitudinal axis A to the bolt carrier plug so that said bolt carrier plug moves inside said bolt carrier with the spring compressed against the transverse stop;
  • Inserting the detachable handle in the aligned transverse groove and opening;
  • Releasing the applied pressure from the bolt carrier plug so that said bolt carrier plug moves backward from the bolt carrier under the effect of the spring return force in order to lock the detachable bolt handle in the bolt carrier plug and the bolt carrier.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a general view of components of an illustrative bolt assembly of a firearm.

FIG. 2 is a view of an illustrative bolt carrier plug and detachable handle in two distinct engagement positions: a) in an unlocked position, b) in a locked position.

FIG. 3 is a cross-section view of the detachable bolt handle in a locked position.

FIG. 4 represents an exploded view of the components of the illustrative bolt assembly.

FIG. 5 represents steps from 1 to 6 of an illustrative method to disassemble the bolt assembly.

FIG. 6 represents steps from 1 to 3 of FIG. 5 on a firearm.

DETAILED DESCRIPTION

In the present disclosure, the expression “bolt carrier” refers to a specific component of the bolt found in conventional firearms. Depending on the design of the firearm, the bolt may consist of a singular part or multiple parts. In the present disclosure, given the multipart nature of the bolt, the term “bolt carrier” is employed to distinguish various components of the bolt. It is worth noting that within the field, the skilled person in the art uses terms like “bolt carrierblock”, “bolt carrier”, and “bolt” interchangeably or without clear distinction. Nevertheless, the present disclosure may be extended to other weapon types, such as bolt-action rifles that do not operate as a straight pull rifle. The expression “bolt carrier” may also be alternatively recognized as or referred to as “bolt carrier” or “bolt”, depending on the design of the firearm and the number of parts composing the bolt.

FIG. 1 is a general view of all the key components of the bolt assembly 10 that may be used in various types of firearms, such as rifles, guns, pistols, shotguns, cannons, or any similar devices. The bolt assembly 10 comprises a bolt carrier 1, a bolt carrier plug 3 and a detachable handle 2. Said detachable handle 2 is mounted on the bolt carrier plug 3 and on the bolt carrier 1 in a locked or unlocked position, with the movement of the bolt carrier plug 3 allowing to lock or unlock the detachable handle 2.

The bolt carrier 1 is defined by a longitudinal axis A, the transverse or transversal direction hereafter referring to the direction perpendicular to said longitudinal axis A. The bolt carrier 1 comprises a chamber 6 specifically designed for the partial or complete housing of the bolt carrier plug 3. The cylindrical cross-sectional shape observed in FIG. 1 for the bolt carrier 1, the chamber 6, and the bolt carrier plug 3 is illustrative, with alternative forms including, but not limited to, rectangular or oval configurations. The bolt carrier 1 is provided with a transverse opening 11, that may be a through-opening, to receive the detachable bolt handle 2. The bolt carrier plug 3 is also provided with a transverse groove 7 that may be a through-groove, receiving the detachable bolt handle 2 when the transverse groove 7 and the transverse opening 11 are aligned. So, the detachable bolt handle acts as a connecting element between the bolt carrier plug 3 and the bolt carrier 1 when the transverse groove 7 and the transverse opening 11 are aligned with the detachable bolt handle 2 passing through.

In other embodiment, the transverse groove 7 may take the form of a slot, slit, recess, or any similar shape that may accommodate portion of the detachable bolt handle 2 when it is aligned with the transverse opening 11.

In the illustrated example, the transverse groove 7 is oriented upwards but it could also be oriented downwards. Preferably, the groove 7 and the opening 11 are respectively a through-groove and a through-opening so that the detachable bolt handle 2 can be mounted on both sides, left and right sides, of the bolt carrier 1. Preferably, the longitudinal length of the transverse groove 7 is bigger than the transverse opening 11, allowing an easy insertion of the detachable bolt handle 2 inside said transverse opening 11.

The bolt carrier plug 3 is further provided with a longitudinal groove 14, also called first longitudinal groove, extending into the wall of the bolt carrier plug 3. This latter also comprises a spring 4 housed inside the bolt carrier plug 3 and positioned to abut a transverse stop 5, extending at least partially into the chamber 6 from one side of the bolt carrier 1. The spring 4 may also be housed inside the bolt carrier 1. The transverse stop 5 is positioned to engage inside the longitudinal groove 14 and to halt the spring 4 when compressed by a longitudinal pressure applied to the head 13 of the bolt carrier plug 3 in the direction of the bolt carrier 1 when switching from the locked position to the unlocked position.

The transverse groove 7 within the bolt carrier plug 3 incorporates a longitudinal recessed area 8, also called first recessed area, preferably positioned on the side opposite to the head 13 of the bolt carrier plug 3. This longitudinal recessed area 8 manifests as a flattened surface, aligned parallel to the longitudinal axis A, and preferably extends from two sides of the cylindrical contour of the bolt carrier plug 3 adjacent to the transverse groove 7. The longitudinal recessed area 8 may comprise two perpendicular surfaces with a longitudinal surface 8a parallel to the longitudinal axis A and a transversal surface 8b perpendicular to the longitudinal axis A. The transverse groove 7 and the longitudinal recessed area 8 are bordered by a vertical wall 16 perpendicular to the longitudinal axis A.

The detachable bolt handle 2 is provided with a transversal recessed area 9, also called second recessed area, visible in FIG. 2a. Said transversal recessed area 9 is intended to at least partially accommodate the longitudinal recessed areas 8 and to interface with the walls 16 of the bolt carrier plug 3 when the detachable bolt handle 2 is in locked position as shown in FIG. 2b. The transversal recessed area 9 comprises a transversal surface 9a perpendicular to the longitudinal axis A and a longitudinal surface 9b parallel to the longitudinal axis A. In locked position, the transversal movement of the detachable bolt handle 2 is obstructed by the interlocking of the longitudinal surface 8a of the longitudinal recessed area 8 with the longitudinal surface 9b of the transversal recessed area 9 and the vertical walls 16 abutting against the transversal surface 9a secure the bolt carrier plug 3 within the bolt carrier chamber 6 and/or prevent disassembly, particularly when the spring 4 is at least partially compressed. Although the edges of the transverse opening 11 restrict the detachable bolt handle 2 from moving freely in other directions, the counter force exerted by the spring 4 guarantees and reinforces its securely locked position within the bolt assembly 10.

According to the present disclosure, the detachable bolt handle 2 is further provided with a longitudinal through-groove 15, also called second longitudinal groove, extending through the transversal recess area 9 to allow the passage of the hammer. Preferably, this longitudinal through-groove is centered on the longitudinal axis A. In the illustrated example, the longitudinal through-groove is oriented downwards. In a variant, the longitudinal through-groove 15 could be oriented upwards resulting in the transverse groove 7 oriented downwards, or it may be entirely removed without affecting the execution of the present disclosure.

According to a variant of the present disclosure, the longitudinal through-groove 15 may lack the surrounding recessed area 9. The detachable bolt handle 2 may comprise only the longitudinal through-groove 15, directly engaging with the longitudinal recessed area 8 of the bolt carrier plug 3 by interlocking the longitudinal surface 8a with the internal surfaces of the longitudinal through-groove 15. In this arrangement, the transversal surface 8b may directly interact with the exterior surface of the detachable bolt handle 2. For this variant, it is thus the transversal surfaces 8b that secure the bolt carrier plug 3 within the bolt carrier chamber 6 instead of the vertical walls 16. In this case, it is preferable for the surrounding exterior surface of the detachable bolt handle 2, or at least the sides where the detachable bolt handle 2 contacts the longitudinal recessed area 8, to be flat, ensuring a planar contact for enhanced stability and reduced wear.

The bolt carrier plug 3 may comprise a head 13 featuring a hollow designed for accommodating a user's finger, facilitating the application of longitudinal pressure towards the bolt carrier 1 when the bolt carrier plug 3 is positioned inside the chamber 6. Various forms, surfaces, or cavities may be employed to enhance grip and facilitate manipulation of the bolt carrier plug 3 by a user's hand. Consequently, this action leads to the further insertion of the bolt carrier plug 3 into the chamber 6, resulting in the compression of the spring 4 as it is halted by the stop 5.

The longitudinal groove 14 located in the bolt carrier plug 3, as illustrated in FIG. 1, may host the stop 5 to direct the linear movement of the bolt carrier plug 3 within the chamber 6 of the bolt carrier 1. In other words, when the stop 5 is inserted into the longitudinal groove 14, it ensures precise alignment of the bolt carrier plug 3 and, consequently, the accurate positioning of the transverse groove 7 with the transverse opening 11. The longitudinal groove 14 eliminates the possibility of the bolt carrier plug 3 rotating within the chamber 6 when engaged with the stop 5.

During the alignment of the transverse groove 7 with the transverse opening 11, it is important that the spring 4 be compressed at least partially by the stop 5 when the bolt carrier plug 3 is housed inside the chamber 6 and guided by the engagement of the stop 5 inside the longitudinal groove 14 provided in. The compression of the spring 4 facilitates the spontaneous rearward displacement of the bolt carrier plug 3 from the unlocked position in FIG. 2a to the locked position in FIG. 2b, so that the detachable bolt handle 2 may be engaged with the bolt carrier plug 3, thereby preventing said detachable bolt handle 2 from moving transversally. Furthermore, the spontaneous rearward movement of the bolt carrier plug 3 exerts a longitudinal pressure on the detachable bolt handle 2, ensuring its secure locking within both the transverse groove 7 and the transverse opening 11. It is important to mention that rearward linear movement of the bolt carrier plug 3, resulting from the release of the longitudinal pressure applied by the user on the head 13 and subsequent decompression of the spring 4, needs to be restricted or halted at a specific position. Failure to do so could lead to the disengagement of bolt carrier plug 3 from the chamber 6 of the bolt carrier 1, resulting in the complete disassembly of the entire bolt assembly 10. The disassembly risk may occur, for example, during the manipulation of the firearm 20 in use or/and when switching the detachable bolt handle 2 from one side position to another. To this end, the wall 16 may serve as a boundary and effectively halts the rearward movement of the bolt carrier plug 3 when it encounters the transversal surface 9a of the recessed area 9. In the variant without the recessed area 9, this role is played by the transversal surface 8b coming into contact with the external surface of the detachable bolt handle 2.

FIG. 3 represents a cross-section of the detachable bolt handle 2 in locked position. The detachable bolt handle 2 comprises an edge 12, preferably a vertical edge perpendicular to the longitudinal axis A, positioned at a transversal distance d approximately equal to the external diameter of the bolt carrier 1. This design ensures that when the detachable bolt handle 2 is inserted into the transverse opening 11, it comes to a stop upon encountering the edge 12 with the external lower surface of the bolt carrier 1, specifically the external lower surface of the transverse opening 11. The placement of the edge 12 is not restricted to the downside of the detachable bolt handle 2 but may also be positioned on the topside or on any side. It is recommended for the height h1, representing the height of the part inserted into the transverse opening 11, to be smaller than the remaining part staying outside the bolt carrier 1 when the detachable bolt handle 2 is inserted in the transverse opening 11. Additionally, the height h1 should be less than the height of the transverse opening 11 to allow the detachable bolt handle 2 to at least partially be inserted into the transverse opening 11, while the overall height h of the remaining part of the detachable bolt handle 2 not inserted into the transverse opening 11 needs to be bigger than the height of the transverse opening 11. Consequently, when the user inserts the detachable bolt handle 2 into the bolt carrier 1 and specifically into the transverse opening 11, the said detachable bolt handle 2 is impeded from further transversal passage by the encounter of the edge 12 with the external edge of the transverse opening 11 or with the external edge of the bolt carrier 1. This ensures that the detachable bolt handle 2 cannot exceed the required position, guaranteeing its precise alignment with other components of the bolt assembly 10, namely the bolt carrier plug 3. This, in turn, ensures a perfect alignment of the recessed area 9 and/or the longitudinal through-groove 15 with the longitudinal recessed area 8, making them ready for engagement.

The method for disassembling the bolt assembly is illustrated in FIGS. 5 and 6. The disassembly is initiated with the application of pressure along the longitudinal axis A to the head 13 of the bolt carrier plug 3, which is already inserted inside the chamber 6 of the bolt carrier 1 (movement 1 in FIGS. 5 and 6). This pressure prompts the bolt carrier plug 3 to move towards the bolt carrier 1, allowing it to further enter the chamber 6, resulting in the total or partial compression of the spring 4, halted by the stop 5. The linear movement of the bolt carrier plug 3 into the bolt carrier 1 is constrained by the engagement of the stop 5 into the longitudinal groove 14 of the bolt carrier plug 3. The forward movement of the bolt carrier plug 3 causes the longitudinal recessed area 8 to move forward into the direction of the bolt carrier 1, disengaging either the longitudinal surface 9b of the recessed area 9 or the internal surfaces of the longitudinal through-groove 15. In simpler terms, the forward movement of the bolt carrier plug 3 changes the detachable bolt handle 2 from a locked position to an unlocked position, especially ready to be pulled from the transverse opening 11 as long as the pressure is applied.

The movement 2 in FIGS. 5 and 6 may be executed when the detachable bolt handle 2 is in an unlocked position and has disengaged from the longitudinal recessed area 8. In this situation, the user may pull the detachable bolt handle 2 while it is still positioned inside the transverse groove 7 and the transverse opening 11. The detachable bolt handle 2 acting as a connecting element between the bolt carrier 1 and the bolt carrier plug 3, pulling the detachable bolt handle 2 allows to remove the bolt carrier plug 3 (movement 3 in FIGS. 5 and 6) and then to remove the components disposed inside the bolt carrier 1 like the striker 19 (movement 4 in FIG. 5). In parallel, the bolt cam pin 18 and then the lock 17 may be removed from the bolt carrier 1 (movements 5 and 6 in FIG. 5).

The detachable bolt handle 2 may be fully disengaged from the bolt assembly 10 for maintenance, cleaning, changing the bolt head for a different caliber, or to facilitate a complete disassembly of the bolt assembly 10 as detailed above. This disengagement may allow for various purposes, such as, but not limited to, conducting routine firearm 20 maintenance, repairing components within the firearm 20, performing cleaning procedures, or any other reason necessitating the disassembly of the bolt assembly 10.

Then, all the elements of the bolt assembly can be assembled again. The striker 19, the bolt cam pin 18 and the lock 17 are disposed in the bolt carrier 1 and the bolt carrier plug 3 is inserted in the chamber 6 of the bolt carrier 1. The user may decide to reinsert the detachable bolt handle 2 to its original side position from where it was previously demounted or switch it to a second side position different from the initial side position e.g. from the right side position to the left side position, or vice versa, if the transverse groove 7 and the transverse opening 11 are a through-groove and a through opening. During the insertion of the detachable bolt handle 2, the user keeps applying the necessary pressure to the bolt carrier plug 3, specifically to the head 13 of the bolt carrier plug 3, ensuring alignment of the transverse opening 11 with the transverse groove 7. This creates an unobstructed path for the detachable bolt handle 2 to be inserted through the transverse opening 11 while the bolt carrier plug 3 is being inserted into the chamber 6 of the bolt carrier 1 and the spring 4 is at least partially compressed against the stop 5.

The lateral insertion movement of the detachable bolt handle 2 into the transverse through-opening 11 is halted by the engagement of the edge 12 with either the external edge of the transverse through-opening 11 or the external surface of the bolt carrier 1.

The release of the applied longitudinal pressure from the head 13 of the bolt carrier plug 3, results in the backward movement of the bolt carrier plug 3 from the chamber 6 of the bolt carrier 1. This backward movement is a result of the spontaneous counterforces of the spring 4. Since the detachable bolt handle 2 is already well positioned in the transverse groove 7, and the recessed area 9 and the longitudinal groove 15 are already aligned with the longitudinal recessed area 8, the backward movement facilitates the effortless engagement of the longitudinal recessed area 8 with the longitudinal groove 15 or with the recessed area 9. The transversal movement of the detachable bolt handle 2 is now constrained with a bolt assembly perfectly secured.

The following enumerated paragraphs lay out several examples of the present disclosure.

• • A1. A bolt assembly (10) for a firearm (20) comprising:
    • a bolt carrier (1) comprising a chamber (6), said bolt carrier (1) defining a longitudinal axis (A) with a direction perpendicular to said longitudinal axis (A) being transverse or transversal,
    • a bolt carrier plug (3) movably mounted along the longitudinal axis (A) in the chamber (6) of the bolt carrier (1),
    • a detachable bolt handle (2) mounted on the bolt carrier plug (3) and on the bolt carrier (1) in a locked position or in an unlocked position, with the movement of the bolt carrier plug (3) allowing to lock or unlock the detachable bolt handle (2),
      said bolt carrier plug (3) and bolt carrier (1) respectively comprising a transverse groove (7) and a transverse opening (11) with the transverse groove (7) and the transverse opening (11) aligned, the detachable bolt handle (2) being mounted inside the aligned transverse groove and opening (7,11) with said detachable bolt handle (2) acting as a connecting element between the bolt carrier plug (3) and the bolt carrier (1) allowing to assemble and disassemble the bolt assembly (10) without requiring the use of a tool.
  • A2. The bolt assembly (10) for the firearm (20) according to A1, wherein the transverse groove (7) and the transverse opening (11) are respectively a transverse through-groove and a transverse through opening.
  • A3. The bolt assembly (10) for the firearm (20) according to A1 or A2, wherein:
    • the bolt carrier (1) comprises a transverse stop (5) extending at least partially into the chamber (6) from a wall of the bolt carrier (1),
    • the bolt carrier plug (3) is provided with a longitudinal groove (14) extending in a wall of the bolt carrier plug (3) and comprises a spring (4) housed inside the bolt carrier plug (3),
      said transverse stop (5) being positioned to engage inside the longitudinal groove (14) and to halt the spring (4) when said spring (4) is compressed by a longitudinal pressure applied to the bolt carrier plug (3) towards the bolt carrier (1), for switching from the locked position to the unlocked position.
  • A4. The bolt assembly (10) for the firearm (20) according to any one of A1 to A3, wherein the bolt carrier plug (3) is provided in its wall with at least one first recessed area (8) adjacent to the transverse groove (7), and wherein the detachable bolt handle (2)is provided with a second recessed area (9) accommodating at least partially the at least first recessed area (8) when the detachable bolt handle (2) is in the locked position.
  • A5. The bolt assembly (10) for the firearm (20) according to A4, wherein said first recessed area (8) comprises two perpendicular surfaces with one longitudinal surface (8a) parallel to the longitudinal axis (A) and one transversal surface (8b) perpendicular to the longitudinal axis (A) and wherein the second recessed area (9) comprises two perpendicular surfaces with one transversal surface (9a) perpendicular to the longitudinal axis (A) and one longitudinal surface (9b) parallel to the longitudinal axis (A), the transversal movement of the detachable bolt handle (2) being obstructed by the interlocking of the longitudinal surface (8a) of the first recessed area (8) with the longitudinal surface (9b) of the second recessed area (9) in locked position.
  • A6. The bolt assembly (10) for the firearm (20) according to A5, wherein the bolt carrier plug (3) is provided with two first recessed areas (8) extending from two sides of the wall of the bolt carrier plug (3) and wherein the second recessed area (9) comprises two longitudinal surfaces (9b) interlocking each with a longitudinal surface (9b) in locked position.
  • A7. The bolt assembly (10) for the firearm (20) according to any one of A4 to A6, wherein the first recessed area (8) and the transverse groove (7) are bordered by a vertical wall (16) perpendicular to the longitudinal axis (A), said vertical wall (16) abutting against the transversal surface (9a) of the second recessed area (9) in locked position.
  • A8. The bolt assembly (10) for the firearm (20) according to any one of A4 to A7, wherein the detachable bolt handle (2) is provided with a longitudinal through-groove (15) extending through the second recessed area (9) for housing components inside the bolt carrier (1) and/or the bolt carrier plug (3).
  • A9. The bolt assembly (10) for the firearm (20) according to any one of A1 to A3, wherein the bolt carrier plug (3) is provided in its wall with at least one first recessed area (8) adjacent to the transverse groove (7), and wherein the detachable bolt handle (2) is provided with a longitudinal through-groove (15) accommodating at least partially the first recessed area (8) when the detachable bolt handle (2) is in the locked position, the transversal movement of the detachable bolt handle (2) being obstructed by the interlocking of the longitudinal surface (8a) of the first recessed area (8) with the inner surfaces of the longitudinal through-groove (15) in locked position and the transversal surface (8b) of the first recessed area (8) abutting against the external surface of the detachable bolt handle (2) in locked position.
  • A10. The bolt assembly (10) for the firearm (20) according to any one of A1 to A9, wherein the detachable handle (2) comprises an edge (12) abutting against the external surface of the bolt carrier (1) when the detachable bolt handle (2) is in locked and unlocked position.
  • A11. A firearm (20) comprising the bolt assembly (10) according to any one of A1 to A10.
  • A12. A method for disassembling and assembling the bolt assembly (10) according to any one of A1 to A10, the method comprising the following steps for disassembling the bolt assembly (10):
    • Unlocking the detachable bolt handle (2) by applying a pressure along the longitudinal axis (A) to the bolt carrier plug (3) so that said bolt carrier plug (3) moves inside the chamber (6) with the spring (4) compressed against the transverse stop (5);
    • Pulling out the detachable handle (2) whilst the pressure is still applied to the bolt carrier plug (3);
    • Releasing the applied pressure from the bolt carrier plug (3) and pulling out the bolt carrier plug (3);
    • Pulling out at least one element disposed at least partly inside the bolt carrier (1).
  • A13. The method according to A12, comprising the following steps for assembling the bolt assembly (10):
    • Mounting the at least one element at least partly inside the bolt carrier (1),
    • Introducing the bolt carrier plug (3) in the chamber (6) of the bolt carrier (1) and applying a pressure along the longitudinal axis (A) to the bolt carrier plug (3) so that said bolt carrier plug (3) moves inside said bolt carrier (1) with the spring (4) compressed against the transverse stop (5);
    • Inserting the detachable handle (2) in the aligned transverse groove and opening (7,11);
    • Releasing the applied pressure from the bolt carrier plug (3) so that said bolt carrier plug (3) moves backward from the bolt carrier (1) under the effect of the spring return force in order to lock the detachable bolt handle (2) in the bolt carrier plug (3) and the bolt carrier (1).

LEGEND

• • 1. Bolt carrier
  • 2. Detachable bolt handle
  • 3. Bolt carrier plug
  • 4. Spring
  • 5. Stop
  • 6. Chamber
  • 7. Transverse groove
  • 8. Longitudinal recessed area, also called first recessed area
    • a. Longitudinal surface
    • b. Transversal surface
  • 9. Transversal recessed area, also called second recessed area
    • a. Transversal surface
    • b. Longitudinal surface
  • 10. Bolt assembly
  • 11. Transverse opening
  • 12. Edge
  • 13. Head
  • 14. Longitudinal groove, also called first longitudinal groove
  • 15. Longitudinal through-groove, also called second longitudinal groove
  • 16. Vertical wall
  • 17. Lock
  • 18. Bolt cam pin
  • 19. Striker
  • 20. Firearm