Designed in conjunction with Maxim Defense, the SBPDW Pistol Stabilizing Brace is 3-position adjustable and compatible with mil-spec bolt carrier groups and carbine buffers. It features a QD attachment point and a nylon strap.This model has a black finish. *Note- Not compatible with Freedom Ordnance FX-9 lowers or SIG M400/516 lowers with integral QD sockets.