The B5 Systems Bravo stock fits AR-15 rifles with a mil-spec carbine receiver extension. B5 built it from the Enhanced SOPMOD and kept the features shooters use, in a lighter, more compact and stronger buttstock. The Bravo keeps the SOPMOD cheek weld, the one-piece anti-rotation QD sling mount, the no-slip cushioned buttpad and the improved SureGrip stock latch. It drops the SOPMOD's storage compartments for a slimmer profile, and the angled rear of the stock gives you the same placement against your shoulder and cheek every time you mount the rifle. This listing is the Coyote Brown color. Features SOPMOD-style ergonomic cheek weld Color-matched steel hardware Overmolded steel anti-rotation QD sling mounts Fixed sling mounts Internal tensioners No-slip cushioned buttpad SureGrip stock latch Mil-spec materials and finishes Made in the USA Compatibility Fits mil-spec diameter carbine receiver extensions. It does not fit commercial-diameter buffer tubes. Check the outside diameter of your tube before ordering, and confirm the stock latch locks into each position after installation.