ClassID:

162498

F41A5/24 - CPC Classification

Classification description:

Mechanisms or systems operated by propellant charge energy for automatically opening the lock gas-operated by direct action of gas pressure on bolt or locking elements

Recent Application in this class:
#1
20260071833
2026-03-12

STAKED BOLT CARRIER FOR A FIREARM

#2
20260043627
2026-02-12

DISCHARGE GAS SYSTEM HAVING GAS TUBE WITH OFFSET END PORTIONS

#3
20260002746
2026-01-01

BOLT CARRIER AND BOLT FOR GAS OPERATED FIREARMS

#4
20250334362
2025-10-30

GAS OPERATING SYSTEM FOR LOW ENERGY AMMUNITION

#5
20250314441
2025-10-09

AR Platform Firearm

#6
20250297819
2025-09-25

ENHANCED BOLT CARRIER ASSEMBLY

#7
20250297818
2025-09-25

Enhanced Bolt Carrier Assembly

#8
20250283680
2025-09-11

GAS-OPERATED FIREARM

#9
20250277639
2025-09-04

ADJUSTABLE GAS SYSTEM

#10
20240240888
2024-07-18

GAS OPERATING SYSTEM FOR LOW ENERGY AMMUNITION

#11
20240230256
2024-07-11

Firearm with multi-part chamber locking assembly

#12
20240093954
2024-03-21

Bolt carrier and bolt for gas operated firearms

#13
20240053115
2024-02-15

GAS-OPERATED FIREARM

#14
20230053496
2023-02-23

Bolt carrier and bolt for gas operated firearms

#15
20220170713
2022-06-02

Semi-automatic shotgun

#16
20220120524
2022-04-21

Gas operated rotary barrel action and pistol

#17
20210372721
2021-12-02

Blowback action with gas assist

#18
20210222976
2021-07-22

Firearm with gas-operated reloading

#19
20210222975
2021-07-22

Gas-operated firearm with adjustable gas pressure selector

#20
20210199397
2021-07-01

Semi-automatic rifle restrictor mechanism and methods

#21
20210010767
2021-01-14

NO SHEAR GAS KEY AND CARRIER SYSTEM

#22
20200333095
2020-10-22

Bolt carrier and bolt for gas operated firearms

#23
20200309474
2020-10-01

Semi-automatic rifle restrictors and methods

#24
20200158452
2020-05-21

Bolt gas ports

#25
20200141674
2020-05-07

Firearm systems and methods

#26
20200124365
2020-04-23

Low pressure bolt carrier group

#27
20200033084
2020-01-30

Devices for restricting the flow of propellant gas in gas-actuated firearms

#28
20190277587
2019-09-12

Semi-automatic rifle restrictors

#29
20190170461
2019-06-06

Quick release gas block securing system

#30
20190072345
2019-03-07

Bolt carrier group for direct gas impingement system

#31
20190056188
2019-02-21

Firearm assembly system and method

#32
20180347926
2018-12-06

Firearm gas redirection assembly

#33
20180328683
2018-11-15

Self-loading pistol with selective slide lock delaying the opening movement during firing but facilitating manual cocking

#34
20180066906
2018-03-08

Bolt carrier and bolt for gas operated firearms

#35
20170299291
2017-10-19

Handguard and barrel assembly with sound suppressor for a firearm

#36
20170153075
2017-06-01

Firearm bolt carrier assembly kit

#37
20170115081
2017-04-27

Gas apparatus and methods for gas operated firearms

#38
20170045320
2017-02-16

Apparatus for field maintenance of jammed firearms

#39
20170045317
2017-02-16

Firearm systems and methods

#40
20170003091
2017-01-05

GAS BLOCK AND GAS TUBE FERRULE SEAL FOR FIREARMS BARREL

#41
20160290748
2016-10-06

Adjustable carrier

#42
20160265859
2016-09-15

BLOWBACK-TYPE FIRING UNIT

#43
20160187084
2016-06-30

Firearm having a hybrid indirect gas operating system

#44
20160178308
2016-06-23

Systems and methods for providing a seal between a bolt carrier and a bolt carrier gas key of a firearm

#45
20160123685
2016-05-05

Bolt carrier

#46
20160076836
2016-03-17

ENHANCED GAS ADJUSTABLE BOLT CARRIER

#47
20160076834
2016-03-17

Charging handle engagement with carrier key of firearm

#48
20160047612
2016-02-18

Firearm systems and methods

#49
20160033218
2016-02-04

Semiautomatic firearm

#50
20150323269
2015-11-12

CARRIER GUIDE AND FIREARM

#51
20150260470
2015-09-17

Systems for firearms

#52
20150260468
2015-09-17

Systems for firearms

#53
20150247694
2015-09-03

Firearm barrel assembly with ported chamber

#54
20150226502
2015-08-13

Bolt carrier with integral adjustable gas key

#55
20150135942
2015-05-21

Bolt carrier and bolt for gas operated firearms

#56
20150082978
2015-03-26

Concentric cylinder gas-operated automatic firearm

#57
20140318361
2014-10-30

Cartridge gas actuated firearm having bolt carrier/gas key seal

#58
20140224113
2014-08-14

Firearm having an indirect gas impingement system

#59
20140144314
2014-05-29

Firearm operating system

#60
20140076144
2014-03-20

Bolt carrier and bolt for gas operated firearms

#61
20140060294
2014-03-06

Handle assembly for charging a direct gas impingement firearm

#62
20130269510
2013-10-17

Gas regulator system

#63
20130152443
2013-06-20

Automatic rifle bolt carrier with fluted boss

#64
20130068089
2013-03-21

FIREARM HAVING AN INDIRECT GAS IMPINGEMENT SYSTEM

#65
20120240760
2012-09-27

Firearm having an articulated bolt train with transversally displacing firing mechanism, delay blowback breech opening, and recoil damper

#66
20120180648
2012-07-19

Firearm

#67
20120180354
2012-07-19

Quick barrel change firearm

#68
20120152106
2012-06-21

Firearm having a direct gas impingement operating system

#69
20120152104
2012-06-21

Firearm having a hybrid indirect gas operating system

#70
20120137871
2012-06-07

Concentric cylinder gas-operated automatic firearm

#71
20120137869
2012-06-07

Automatic rifle bolt carrier with fluted boss

#72
20110185886
2011-08-04

Bolt carrier impingement device for a firearm

#73
20100236395
2010-09-23

Firearm operating mechanisms and methods

#74
20100000400
2010-01-07

Firearm having an indirect gas impingement system

#75
20090031607
2009-02-05

Firearm

#76
20090031606
2009-02-05

Firearm

#77
20090007477
2009-01-08

Firearm

#78
20090000173
2009-01-01

FIREARM

#79
20050262752
2005-12-01

Firearm

#80
20050223613
2005-10-13

Gas operated action for auto-loading firearms

#81
20050217473
2005-10-06

Firearms having a locked breech

#82
18979826
2026-05-12

Reduced weapon system blowback

#83
18767183
2025-11-18

Forend kit and firearm comprising components of the kit

#84
16178534
2019-08-13

Low pressure bolt carrier group

#85
15174575
2017-09-19

Indirect impingement operating system for a firearm

#86
14592394
2016-04-05

Bolt carrier gas impingement system

#87
14456841
2016-06-21

Adjustable carrier

#88
13738245
2014-06-17

Recoil reduction apparatus and method for weapon