Compact stock for AR-style firearms
A compact stock for an AR-style firearm includes a receiver extension configured to attach to a lower receiver, a buffer assembly receivable in the receiver extension, a buffer biasing member receivable in the receiver extension, and a buffer locking mechanism. The buffer assembly is configured to reciprocate between a retracted position wherein the buffer assembly is contained within the receiver extension, and an extended position wherein the buffer assembly is in-battery within an upper receiver. The buffer biasing member is configured to bias the buffer assembly toward the extended position. The buffer locking mechanism is configured to selectably retain the buffer assembly and the buffer biasing member within the receiver extension when the buffer assembly is in the retracted position such that the upper receiver is rotatable relative to the lower receiver about a forward take down pin of the firearm unimpeded by the buffer assembly and buffer biasing member.
1 . A compact stock for an AR-style firearm, comprising:
a housing configured to be secured to a lower receiver of the firearm;
a butt member defining a pair of rod bores therein;
a pair of rod biasing members disposed within the pair of rod bores;
a pair of rods extending from the housing into the pair of rod bores and against the pair of rod biasing members; and
a pair of fasteners configured to connect the pair of rods to the butt member and retain the pair of rods in the pair of rod bores;
wherein the pair of rod biasing members are configured to oppose rearward movement of the rods during discharge of the firearm and thereby damp the recoil of the firearm.
2 . The compact stock of claim 1 , wherein:
the butt member includes a pair of interior walls which partially obstruct the pair of rod bores; and
the pair of rod biasing members are disposed in the rod bores against the pair of interior walls and act against the interior wall and an end of each rod to oppose compression caused by rearward movement of the rods during discharge of the firearm.
3 . The compact stock of claim 2 , wherein:
each rod of the pair of rods includes a threaded bore defined in a rear end thereof;
each interior wall of the pair of interior walls includes an access hole defined therethrough; and
each fastener is a threaded fastener configured to extend through the access hole of the respective interior wall and into the threaded bore of the respective rod to threadingly engage the rod and thereby retain the rod in the respective rod bore of the butt member.