Stock interface

Abstract

A stock interface can be slipped onto and attached to a standard CAR buffer tube. The stock interface provides structures for attaching a butt stock and stock interface attachments such as an ergonomic attachment, a container attachment, and a power attachment. Small arms ergonomics can be improved by providing a better cheek weld via an ergonomic attachment. Container attachments provide storage. Power attachments provide electrical power for items such as electronic sighting systems, lasers, lights, or any of the other electronic devices attached to a small arm.

1 . A system comprising:
 a stock interface;   a stock interface attachment that attaches to the stock and wherein the stock interface attachment comprises an electrical power attachment; and   a means for fastening the stock interface to a firearm buffer tube.   
   
   
       2 . The system of  claim 1  wherein the fastening means comprises a fastener that when tightened while the stock interface is positioned over a firearm buffer tube causes the stock interface to become frictionally fixed to the buffer tube. 
   
   
       3 . The system of  claim 2  wherein the fastener passes through a hole in the stock interface and wherein the fastener tightens such that the fastener presses against the buffer tube and thereby frictionally attaches the stock interface to the buffer tube. 
   
   
       4 . The system of  claim 1  wherein the stock interface further comprises at least one dovetail, wherein the stock interface attachment comprises at least one matching dovetail; and wherein the at least one dovetail and the at least one matching dovetail mate such that the at least one stock interface attachment attaches to the stock interface to thereby provide a cheek weld. 
   
   
       5 . The system of  claim 1  wherein the stock interface attachment attaches to the stock interface to thereby provide a cheek weld. 
   
   
       6 . The system of  claim 1  wherein the stock interface attachment further comprises a sealable storage compartment. 
   
   
       7 . The system of  claim 1  wherein the stock interface attachment is an ergonomic attachment. 
   
   
       8 . A system comprising:
 a stock interface; and   a means for fastening the stock interface to a firearm buffer tube wherein tightening a fastener when the stock interface is positioned over a firearm buffer tube causes the stock interface to become frictionally fixed to the buffer tube.   
   
   
       9 . The system of  claim 8  wherein the fastener is threaded and passes through a hole in the stock interface, wherein the fastener is tightened by turning the fastener within the hole, and wherein the fastener when tightened presses against the buffer tube and thereby frictionally attaches the stock interface to the buffer tube. 
   
   
       10 . The system of  claim 8  wherein the stock interface further comprises at least one dovetail and the system further comprises:
 at least one stock interface attachment comprising at least one matching dovetail; and   wherein the at least one dovetail and the at least one matching dovetail mate such that the at least one stock interface attachment attaches to the stock interface to thereby provide a cheek weld.   
   
   
       11 . The system of  claim 8  further comprising a stock interface attachment that attaches to the stock interface to thereby provide a cheek weld. 
   
   
       12 . The system of  claim 11  wherein the stock interface attachment is a container attachment comprising a sealable storage compartment. 
   
   
       13 . The system of  claim 11  wherein the stock interface attachment is an electrical power attachment. 
   
   
       14 . The system of  claim 11  wherein the stock interface attachment is an ergonomic attachment. 
   
   
       15 . The system of  claim 8  wherein the stock interface further comprises at least one snapping dovetail, wherein the system further comprises a stock interface attachment comprising at least one matching dovetail, and wherein aligning the stock interface attachment to the stock interface and pressing causes the stock interface attachment to snap onto and thereby attach to the stock interface. 
   
   
       16 . A system comprising:
 a buffer tube comprising an elongated rib extending radially outward and a grove running lengthwise along the outside of the elongated rib;   a stock interface comprising at least one interface hole, at least one dovetail and a longitudinally running mounting rail;   at least one threaded fastener that passes through the interface hole and is twisted within the interface hole to thereby press into the groove and frictionally attach the stock interface to the buffer tube;   a stock interface attachment comprising at least one matching dovetail; wherein the at least one dovetail and the at least one matching dovetail mate such that the at least one stock interface attachment attaches to the stock interface to provide a cheek weld; and   a butt stock that attaches to the mounting rail.   
   
   
       17 . The system of  claim 16  wherein the stock interface attachment further comprises at least one interlocking hard point, and at least one threaded hard point;
 wherein the stock interface further comprises at least one dovetail; and   wherein the at least one dovetail and the at least one matching dovetail mate such that the at least one stock interface attachment attaches to the stock interface.