Battle Arms Development Workhorse AR-15 Upper 16 Barrel 5.56 NATO 15 M-LOK Handguard

Workhorse AR-15 Upper Features This upper receiver from Battle Arms Development features a Rosco Manufacturing 16in 4150V Chrome Moly Vanadium steel barrel chambered in 5.56 NATO with a 1:7 twist M4 barrel extension and a Mid-length gas system. The barrel is finished with a .750 diameter low-profile gas block WORKHORSE 15in M-Lok Free Float Rail and an A2 flash hider. Workhorse AR-15 Upper Specifications Barrel Length: 16in Gas System: Midlength Barrel Profile: A2 Barrel Steel: 4150 Chrome-Moly Vanadium Barrel Finish: Nitride Chrome Lining: None Muzzle Thread: 1/2-28 Chamber: 5.56 NATO Twist Rate: 1:7 Barrel Extension: M4 Diameter at Gas Block: .750 Gas Block Type: Low-profile Muzzle Device: A2 Flash Hider Receiver Material: Forged 7075 T6 Receiver Type: M4 Handguard Type: WORKHORSE 15in M-Lok Free Float Rail Bolt Carrier Group Included: No Charging Handle Included: No Overall Length: 24.5in