Stock assembly for a firearm

Abstract

A buttstock assembly including a buttstock, a stock body removably couplable to a buffer tube of a firearm, and a pair of extension rods each having a first end coupled to the buttstock and a second end slidably received through the stock body. The extension rods are movable between a retracted position and an extended position. A stop element is carried by the stock body and movable between an engaged position engaging the extension rods and preventing sliding movement therethrough and a disengaged position disengaging the extension rods and permitting sliding movement thereof.

1 . A buttstock assembly comprising:
 a buttstock;   a stock body removably couplable to a buffer tube of a firearm;   a pair of extension rods each having a first end coupled to the buttstock and a second end slidably received through the stock body and movable between a retracted position and an extended position; and   a stop element carried by the stock body and movable between an engaged position engaging the extension rods and preventing sliding movement therethrough and a disengaged position disengaging the extension rods and permitting sliding movement thereof.   
     
     
         2 . A buttstock assembly as claimed in  claim 1  further comprising:
 a clamp ring coupled to the stock body; and 
 fasteners adjustably coupling the clamp ring to the stock body and for clamping engagement with the buffer tube therebetween to prevent movement of the stock body relative the buffer tube. 
 
     
     
         3 . A buttstock assembly as claimed in  claim 2  wherein the clamp ring includes a rearward end, a forward end, lower edges, an inner surface for engaging the buffer tube and attachment posts extending from the lower edges for positioning on either side of the buffer tube, the fasteners are received through a bottom of the stock body, and are received by apertures formed in the attachment posts. 
     
     
         4 . A buttstock assembly as claimed in  claim 1  wherein a plurality of slots is formed in each of the extension rods, each of the plurality of slots being transverse to a length thereof, the stop element engaging selected ones of the plurality of slots with the stop element in the engaged position. 
     
     
         5 . A buttstock assembly as claimed in  claim 4  further including a biasing member biasing the stop element into the engaged position. 
     
     
         6 . A buttstock assembly as claimed in  claim 1  wherein the stock body comprises:
 a side, an opposing side, a front edge and a rear edge; 
 a first aperture extending the length of the side from the front edge to the rear edge; 
 a second aperture extending the length of the opposing side from the front edge to the rear edge; and 
 the first aperture and the second aperture sized to slidably receive the extension rods therethrough. 
 
     
     
         7 . A buttstock assembly as claimed in  claim 6  wherein the stop element further includes:
 a base carried by the stock body between the side and the opposing side, 
 an actuating member extending downwardly from the base through the stock body; 
 a first engagement member extending from the base to the side of the stock body and a second engagement member extending from the base opposite the first engagement member, to the opposing side of the stock body, the first engagement member and the second engagement member extending into the first aperture and the second aperture, respectively with the stop element in the engaged position. 
 
     
     
         8 . A Firearm comprising:
 a lower receiver having a forward end, a rearward end and a buffer tube extending from the rearward end; and   a stock assembly carried by the buffer tube, the stock assembly comprising:
 a buttstock; 
 a stock body removably coupled to the buffer tube; 
 a pair of extension rods each having a first end coupled to the buttstock and a second end slidably received through the stock body and movable between a retracted position and an extended position; and 
 a stop element carried by the stock body and movable between an engaged position engaging the extension rods and preventing sliding movement therethrough and a disengaged position disengaging the extension rods and permitting sliding movement thereof. 
   
     
     
         9 . A firearm as claimed in  claim 8  further comprising:
 a clamp ring overlying the buffer tube and coupled to the stock body underlying the buffer tube; and 
 fasteners adjustably coupling the clamp ring to the stock body and clamping the buffer tube therebetween to prevent movement of the stock body relative the buffer tube. 
 
     
     
         10 . A firearm as claimed in  claim 9  wherein the buffer tube is coupled to and extends rearwardly from a receptacle at the rearward end of the lower receiver. 
     
     
         11 . A firearm as claimed in  claim 10  wherein the clamp ring includes a rearward end, a forward end, lower edges, an inner surface engaging the buffer tube and attachment posts extending from the lower edges on either side of the buffer tube with the forward end adjacent the receptacle, the fasteners are received through a bottom of the stock body, and are received by apertures formed in the attachment posts. 
     
     
         12 . A firearm as claimed in  claim 8  wherein a plurality of slots is formed in each of the extension rods, each of the plurality of slots being transverse to a length thereof, the stop element engaging selected ones of the plurality of slots with the stop element in the engaged position. 
     
     
         13 . A firearm as claimed in  claim 12  further including a biasing member captured between the buffer tube and the stop element, the biasing member biasing the stop element into the engaged position. 
     
     
         14 . A firearm as claimed in  claim 8  wherein the stock body comprises:
 a side, an opposing side, a front edge and a rear edge; 
 a first aperture extending the length of the side from the front edge to the rear edge; 
 a second aperture extending the length of the opposing side from the front edge to the rear edge; and 
 the first aperture and the second aperture sized to slidably receive the extension rods therethrough. 
 
     
     
         15 . A firearm as claimed in  claim 14  wherein the stop element further includes:
 a base carried by the stock body between the side and the opposing side, 
 an actuating member extending downwardly from the base through the stock body; 
 a first engagement member extending from the base to the side of the stock body and a second engagement member extending from the base opposite the first engagement member, to the opposing side of the stock body, the first engagement member and the second engagement member extending into the first aperture and the second aperture, respectively with the stop element in the engaged position.