Chambering: 223 Wylde for 223 Rem. or 5.56 NATO. 300 BLK. Built on Enhanced Series Upper Receiver, which has a free-floated integrated upper receiver and handguard system. Barrel: 16" 223 Wylde, mid-length, 1:8 twist, 416 stainless steel, bead-blasted. Handguard: Gen 2 Enhanced Series. Gas System: Low-profile gas block and mid-length gas tube. Bolt Carrier Group: M16 Cut, 8620 steel, phosphate finish, staked. Muzzle Device: Standard A2 flash hider. Stock: Magpul STR. Grip: Magpul MOE. Magazine: Magpul 30-round PMAG. Weight: approx. 7 lbs. The Spartan Worn rifle has a 16" 5.56 barrel and 15" Enhanced M-LOK Gen 2 Handguard. The handguard and upper and lower receivers have Spartan Worn Cerakote hand finishes by Blown Deadline—a pro series ambidextrous model introduced in 2024. The controls on either side allow left- and right-handed shooters to drop magazines and release bolt carrier groups. Add 25% for the Spartan Worn variant.