Doublestar ACE Folding Stock Mechanism with For Ak, Folds Left or Right, Black A500-K

DBST-ACE's Standard Folding Mechanism (FSM) with Boss" is the standard Folding Stock Mechanism. It fits between the Receiver Block and Modular Stock. The FSM can be mounted to fold either left or right. It will add .75 to your LOP and weighs 3.5 oz. The Boss is the raised (oblong shaped) portion on the Arm (small side).