- Upper Receiver Type: A3 Flat-Top
- Barrel Length: 16"
- Barrel Contour: Not listed by manufacturer
- Barrel Material: 416 Stainless Steel
- Muzzle Thread Pattern: Not listed by manufacturer
- Chrome Lined: No
- Barrel Finish: Black Matte
- Twist Rate: 1 in 16"
- Chamber: 45 ACP
- M4 Feed Ramps: No
- Muzzle Device: Flash Suppressor
- Gas System Length: N/A-Blowback Operated
- Gas Block Diameter: N/A-Blowback Operated
- Handguard: M4 Polymer Handguards
- Sights: A2 Front Sight
- Bolt Carrier Assembly Included: Yes
- Bolt Carrier Type: 45 ACP Compatible Carrier
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.