Firearm and Firearm Shoulder Stock Conversion System

Abstract

A firearm conversion system has a uniquely designed, unitary shoulder stock adapter. The adapter is configured to fixedly attach to a specially provided shoulder stock at one of its ends, and, at its other end, to fixedly attach to the trigger housing assembly and pistol grip of a Smith & Wesson, Model 76 sub-machine gun. When properly installed, the conversion components create a newly designed sub-machine gun having a fixed, comfortable shoulder stock with a longitudinal axis in fore and aft alignment with the longitudinal axis of the adapter and the trigger housing assembly.

Description

FIELD OF THE INVENTION[0001]This invention relates to an improvement in the design of a firearm, specially directed, but not limited, to a Smith & Wesson 9 mm, Model 76 sub-machine gun and clones (S&W 76 sub-machine gun).BACKGROUND OF THE INVENTION[0002]The design of the S&W 76 sub-machine gun was initially designed and produced for the U.S. Navy in 1967, for the purpose of military operations in Southeast Asia. However, only several thousand of these sub-machine guns were produced, since the Navy subsequently decided this type of weapon was not required.[0003]The S&W 76 sub-machine gun is a blowback, select-fire sub-machine gun, fired from its open bolt. It has a folding steel wire shoulder stock, capable of being folded forward to the left in order to save length and provide a compact unit for purposes of military operations. Details relating to the design and construction of the standard components of the S&W 76 sub-machine gun are included in the Mar. 1, 1969 Edition of The Smit...

AI Technical Summary

Benefits of technology

The patent describes a system for modifying a S&W 76 sub-machine gun by adding a fixed shoulder stock. This system allows the gun to be easily and conveniently interchanged between its standard folding shoulder stock and the fixed shoulder stock of the invention. This modification makes the firearm more comfortable and natural to fire, resulting in improved targeting accuracy.

Problems solved by technology

However, only several thousand of these sub-machine guns were produced, since the Navy subsequently decided this type of weapon was not required.

While this firearm remains popular with collectors, the current use of the S&W 76 sub-machine gun as a firearm for shooters renders the folding capability of its shoulder stock unnecessary.

As a practical matter, this originally designed shoulder stock not only requires adjustment before the firearm can be used, but also is somewhat uncomfortable and unstable when being fired.

Also, the foldable aspect of the shoulder stock requires additional, unnecessary moving parts, which makes it more susceptible to breakage and repair.

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