Patent ID: 8127483

Claim:
A firearm comprising: a receiver extension including a first end operatively engaging a firearm receiver and a second end spaced longitudinally from said first end; and, a buttstock assembly operatively engaging said receiver extension for displacement therealong between a first position disposed toward said first end of said receiver extension and a second position spaced longitudinally from said first position toward said second end of said receiver extension, said buttstock assembly including: a buttstock body including a first passage extending longitudinally from a first end of said buttstock body toward a second end of said buttstock body, a second passage extending transverse to said first passage and a third passage extending transverse to said first and second passages, said third passage extending through a portion of said buttstock body in communication with said first and second passages; a transfer member at least partially received in said second passage, said transfer member including an inner side wall at least partially defining an opening extending therethrough and an outer side wall extending along a peripheral portion of said transfer member, said transfer member positioned within said second passage such that said opening is in alignment with said third passage and said outer side wall is in abutting engagement with said buttstock body; a retaining member extending between a first end and a second end spaced from said first end, said retaining member at least partially received within said third passage and extending through said opening in said transfer member such that said first end of said retaining member projects at least partially into said first passage to operatively engage said receiver extension; a first biasing member operatively disposed between said buttstock body and said retaining member, said first biasing member operative to urge said first end of said retaining member toward said first passage; and, a retraction member operatively secured on said retaining member and adapted to withdraw said first end of said retaining member from operative engagement with said receiver extension to permit said buttstock assembly to be displaced between said first and second positions.