This is a F.A.B. Pistol Grip known as the AGF-43S, model FX-AGF43SB.
The AGF-43S is a folding pistol grip for M16 variants which enables easier vehicular deployment and improves concealment while in storage or carried within a bag. It folds from vertical to horizontal position and back by the push of a button. Features include finger grooves and backstrap" and extended beavertail and a readily accessible storage compartment.
Features:
Black finish
Provides easier concealment
Extended beavertail
Fits AR
