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.

1 - 10 . (canceled) 
     
     
         11 . A shoulder stock adapter for a firearm comprising a shoulder stock having a longitudinal axis, a connector element, and a stock tab, a trigger housing assembly with a longitudinal axis and an end mounted bracket extension, and a pistol grip having a handle grip section and a top section with an elongated top channel, said adapter being a single component independent of the shoulder stock and comprising:
 a singular, integral, unitary main body with a longitudinal axis, said main body with an aft end and a forward end, said aft end of the main body having a cavity comprising connection means for engaging the connector element and fixedly attaching the shoulder stock to the adapter, said forward end of the adapter comprising an adapter channel inset within the main body of the adapter to be slidably mounted over the bracket extension, a stock slot for receiving the stock tab, and an attachment bar extending perpendicular from the main body, said bar located within the top channel of the pistol grip;   whereby upon installation of the adapter onto the firearm, adapter is located between the shoulder stock and trigger housing assembly, such that the shoulder stock is fixedly secured to the adapter and the adapter is fixedly secured to the trigger housing assembly, the longitudinal axii of the shoulder stock, adapter, and assembly being in fore and aft alignment.   
     
     
         12 . The shoulder stock adapter as in  claim 11  wherein the adapter further comprises a threaded opening for attaching the adapter to the pistol grip. 
     
     
         13 . The shoulder stock adapter as in  claim 12  wherein the adapter further comprises a second opening for attaching the adapter to the trigger housing assembly.