公开(公告)号：US08590199B2

公开(公告)日：2013-11-26

申请号：US13069930

申请日：2011-03-23

Applicant: John L. Overstreet ,  Charles C. Kelly

Inventor： John L. Overstreet ,  Charles C. Kelly

IPC: F41A3/12

CPC classification number: F41A3/36 ,  F41A3/12 ,  F41A3/54 ,  F41A3/72 ,  F41A21/10 ,  F41A21/12 ,  F41A33/00

Abstract: A sub caliber action device installable within an upper receiver of an AR-15 type firearm which interfaces with an upper receiver mounted forward assist for use with such as .22 caliber ammunition. The device includes a generally elongated receiver plate exhibiting a generally lengthwise extending notched interior established between extending sides, with the notched interior seating a bolt and a forward assist adaptor in reciprocating fashion along the receiver plate between an end-most location and a forward secured chamber adaptor. The adaptor is reconfigurable to inertially and linearly displace a limited distance relative to the bolt support sleeve during full auto firing mode and which influences the bolt against the chamber adaptor during striking of the bolt supported firing pin by the hammer.

Abstract translation: 可安装在AR-15型枪支的上部接收器内的副口径动作装置，其与上部接收器相连接，前置辅助装置与例如22口径弹药一起使用。 该装置包括大致细长的接收板，其在延伸侧面之间呈现出大致纵向延伸的切口内部，其中凹口内部沿着接收板以最接近的位置和向前固定室之间以往复方式安置螺栓和前向辅助适配器 适配器。 适配器可重构，以在全自动点火模式期间相对于螺栓支撑套筒惯性和线性地移动有限的距离，并且在用锤击打螺栓支撑的击发销时影响抵靠腔适配器的螺栓。