- Upper Receiver: Modified A3 Flat-Top (No Ejection Port Door)
- Barrel Length: 16.5"
- Barrel Contour: Heavy, Tapered
- Barrel Material: Chrome Moly Vanadium Steel
- Muzzle Thread Pattern: 49/64"-20
- Chrome Lined: No
- Barrel Finish: Parkerized
- Twist Rate: 1 in 20"
- Chamber: 50 Beowulf (12.7x42mm)
- M4 Feed Ramps: No
- Muzzle Device: Tank Muzzle Brake
- Gas System Length: Mid
- Gas Block Diameter: 0.907"
- Handguard: Midwest Industries Quad Rail, Free Float
- Sights: None
- Bolt Carrier Assembly Included: Yes
- Bolt Carrier Type: 50 Beowulf Compatible Carrier
- Extras: Low Profile Gas Block, 7-Rnd Magazine
- Weight: 4.95 lbs
- Upper does NOT have an ejection port door
Please Note: Installation of AR-15 upper assemblies with certain features including, but not limited to: flash hiders, bayonet lugs, and threaded muzzles may violate state and/or local laws.