The APF Delta Carbine in the Delaware Crossing finish is a semi-automatic AR-15 style carbine chambered in 5.56 NATO, built on a forged lower receiver with an M16 bolt carrier group. The 16" barrel is 4150 nitride treated with a 1:7 twist rate, paired with a .750 high-rail gas block for reliable cycling. The M4 adjustable stock, A2 pistol grip, and carbine-length Delta ring handguard round out this ready-to-run configuration. 5.56 NATO with 30-round capacity 16" 4150 nitride barrel 1:7 barrel twist rate .750 high-rail gas block Forged lower receiver M16 bolt carrier group M4 adjustable stock A2 pistol grip Carbine-length Delta ring handguard Metal magazine included Delaware Crossing finish