- Upper Receiver Type: A3 Flat-Top
- Barrel Length: 22"
- Barrel Contour: Not listed by manufacturer
- Barrel Material: Stainless Steel
- Muzzle Thread Pattern: N/A-Crowned
- Chrome Lined: No
- Barrel Finish: Matte Stainless
- Twist Rate: 1 in 10"
- Chamber: 25 Winchester Super Short Magnum
- M4 Feed Ramps: Not listed by manufacturer
- Muzzle Device: N/A
- Gas System Length: Rifle
- Gas Block Diameter: Not listed by manufacturer
- Handguard: Vented Free Float
- Sights: None
- Bolt Carrier Assembly Included: Yes
- Bolt Carrier Type: N/A
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.