公开(公告)号：US11137222B2

公开(公告)日：2021-10-05

申请号：US16571054

申请日：2019-09-13

Applicant: Arm West, LLC

Inventor： Leroy James Sullivan ,  James McGarry ,  Robert Lloyd Waterfield ,  Paul N. Latulippe

IPC: F41A5/28 ,  F41A3/14 ,  F41A5/26 ,  F41A5/18 ,  F41A5/24 ,  F41A13/12 ,  F41A21/24 ,  F16J9/16 ,  F41A3/70 ,  F41A3/26 ,  F41G1/02

Abstract: A firearm can have a bolt having a plurality of locking lugs that are configured to have a shear area that is larger than that of a standard M16/M4. A bolt carrier can have a bolt that has a double cut cam having an unlocking cam surface that has sufficient dwell increase to delay a start of unlocking when the bolt carrier is used in an M4 carbine. A stepped extractor pin may be provided that prevents disengagement of the extractor pin. A tube can be configured to provide gas from a barrel of the firearm to the piston via the carrier key. The tube can have a heat radiator formed from triangular shaped threads on at least a portion of the tube. A piston on the bolt and can have a plurality of rings including pairs of mating rings that are formed and maintained as a matched pair.

公开(公告)号：US10415906B2

公开(公告)日：2019-09-17

申请号：US15284453

申请日：2016-10-03

Applicant: Arm West, LLC

Inventor： Leroy James Sullivan ,  James McGarry ,  Robert Lloyd Waterfield ,  Paul N. Latulippe

IPC: F41A5/26 ,  F41A3/14 ,  F41A3/26 ,  F16J9/16 ,  F41A3/70 ,  F41A5/18 ,  F41A5/24 ,  F41A5/28 ,  F41A13/12 ,  F41A21/24 ,  F41G1/02

Abstract: A firearm can have a bolt having a plurality of locking lugs that are configured to have a shear area that is larger than that of a standard M16/M4. A bolt carrier can have a bolt that has a double cut cam having an unlocking cam surface that has sufficient dwell increase to delay a start of unlocking when the bolt carrier is used in an M4 carbine. A stepped extractor pin may be provided that prevents disengagement of the extractor pin. A tube can be configured to provide gas from a barrel of the firearm to the piston via the carrier key. The tube can have a heat radiator formed from triangular shaped threads on at least a portion of the tube. A piston on the bolt and can have a plurality of rings including pairs of mating rings that are formed and maintained as a matched pair.

公开(公告)号：US20170045317A1

公开(公告)日：2017-02-16

申请号：US15284453

申请日：2016-10-03

Applicant: Arm West, LLC

Inventor： Leroy James Sullivan ,  James McGarry ,  Robert Lloyd Waterfield ,  Paul N. Latulippe

IPC: F41A3/26 ,  F41A5/18 ,  F16J9/16 ,  F41A21/24 ,  F41A3/70 ,  F41G1/02 ,  F41A5/26

CPC classification number: F41A3/26 ,  F16J9/16 ,  F41A3/14 ,  F41A3/70 ,  F41A5/18 ,  F41A5/24 ,  F41A5/26 ,  F41A5/28 ,  F41A13/12 ,  F41A21/24 ,  F41G1/02

Abstract: A firearm can have a bolt having a plurality of locking lugs that are configured to have a shear area that is larger than that of a standard M16/M4. A bolt carrier can have a bolt that has a double cut cam having an unlocking cam surface that has sufficient dwell increase to delay a start of unlocking when the bolt carrier is used in an M4 carbine. A stepped extractor pin may be provided that prevents disengagement of the extractor pin. A tube can be configured to provide gas from a barrel of the firearm to the piston via the carrier key. The tube can have a heat radiator formed from triangular shaped threads on at least a portion of the tube. A piston on the bolt and can have a plurality of rings including pairs of mating rings that are formed and maintained as a matched pair.

Abstract translation: 枪支可以具有螺栓，该螺栓具有多个锁定凸耳，其被配置成具有比标准M16 / M4的剪切面积大的剪切面积。 螺栓托架可以具有螺栓，该螺栓具有双切割凸轮，其具有解锁凸轮表面，当螺栓托架用于M4卡宾枪时，其具有足够的停留增加以延迟解锁开始。 可以提供一种可以防止提取销脱离的阶梯式提取器销。 管可以被配置成经由载体钥匙从枪的枪管提供气体到活塞。 管可以具有在管的至少一部分上由三角形螺纹形成的散热器。 螺栓上的活塞并且可以具有多个环，包括形成并保持为匹配对的配对环对。