Ar folding stock adapter ebay https://gunsbuyerusa.com/product/ar-...stock-adapter/ AR-15/M16 GEN3-M FOLDING STOCK ADAPTER Put A Folding Stock On Any AR-Pattern Rifle! Law Tactical's steel adapter enables the installation of a folding stock on any AR-15 to create a smaller-profile rifle for easy deployment from a vehicle or transport in non-permissive environments. Works with standard gas impingement OR gas piston system. Accepts A2, mil-spec M4-style, ...