The WORKHORSE complete upper receiver is purpose-built around the forged WORKHORSE 7075-T6 aircraft-grade aluminum receiver and free-float rail handguard with M-LOK attachment point at 3, 6, and 9 o'clock positions. At 12 o'clock is a full-length Picatinny accessory rail with their signature notch cut matching the upper receiver. Every upper receiver is equipped with a 4150 chrome-moly steel black nitride barrel for durability and accuracy. The barrel is individually head-spaced with a matching 9310 steel bolt and 8620 black nitride carrier for ultimate reliability and ease of cleaning.
Specifications:
- Barrel Length: 10.5"
- Gas System: Carbine
- Barrel Profile: A2
- Barrel Steel: 4150 Chrome-Moly Vanadium
- Barrel Finish: Nitride
- Chrome Lining: None
- Muzzle Thread: 1/2-28
- Chamber: .223 Wylde
- Twist Rate: 1:8
- Barrel Extension: M4
- Diameter at Gas Block: .750
- Gas Block Type: WORKHORSE® Low Profile
- Muzzle Device: A2 Flash Hider
- Receiver Material: Forged 7075 T6
- Receiver Type: M4
- Handguard Type: WORKHORSE® 9.5in M-Lok® Free Float Rail
- Bolt Carrier Group Included: Yes
- Bolt Steel: 9150
- Bolt Carrier Profile: M-16/ 4150 CRMV Black Nitride
- Charging Handle Included: Yes, Bad Rack-15 Ambidextrous Charging Handle
- Overall Length: 18.5in
