Specifications:

• SKU: WH-UR-16-556

• Barcode: 810033784095

• 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

• Bolt Steel: N/A

• Bolt Carrier Profile: N/A

• Charging Handle Included: No

• Overall Length: 24.5in

Barrel: 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.

Upper: Forged 7075-T6 AR upper is hard coat anodized black for durability. Featuring M4 feed ramp cuts, these upper receivers are made in the USA.

**This Upper Does Not Include BCG or Charging Handle**