5.56 NATO/.223 Rem. (disc.) 5.56 WYO, .220 WYO, .240 WYO, 6.5 Grendel, or .300 AAC Blackout cal., DI, rifle or mid- (on 18 or 20 in. barrel depending on cal.) length gas system, 16, 18, or 20 in. SS hand lapped match grade fluted barrel, Gunfighter Mod 0 compensator, threaded muzzle, Ti barrel nut and mid weight barrel profile, 10, 20, or 30 (5.56 WYO only) or 10, 15, or 25 shot mag., flared magwell, Geissele Hi Speed trigger w/integral trigger guard, Magpul MOE stock and MOE+ grip, ambi safety selector, billet upper w/redesigned case deflector and lower, Geissele MK1 13 in. super modular rail, BCM Gunfighter Mod 4 charging handle, Wyoming Arms H4 rifle buffer, black, matte sand, Gun Metal Grey, or two-tone finish, optional optics package available.