F.A.B. Defense AGF-43S, Folding Pistol Grip, Fits AR, Black 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.