This Bushmaster XM15 A3 upper will attach to virtually any standard AR-15 lower receiver. Comes complete with charging handle, forward assist, ejection port cover, bolt and bolt carrier assembly. With a 1 in 9" twist, the 16" chrome lined barrel provides outstanding accuracy that has been enjoyed by competition shooters worldwide. Pre-ban style upper includes a bayonet lug and flash hider. Supplied without a rear sight, this upper is a great base for a red dot sight or iron sights (both sold separately).
- Upper Receiver Type: A3 Flat-Top
- Barrel Length: 16"
- Barrel Contour: Lightweight
- Barrel Material: 4140 Chrome Moly Steel
- Muzzle Thread Pattern: 1/2" -28
- Chrome Lined: Yes
- Barrel Finish: Parkerized
- Twist Rate: 1 in 9"
- Chamber: 5.56x45mm NATO
- M4 Feed Ramps: Yes
- Muzzle Device: A2 Flash Hider
- Gas System Length: Carbine
- Gas Block Diameter: 0.750"
- Handguard: A2 Style
- Sights: A2 Front
- Bolt Carrier Assembly Included: Yes
- Bolt Carrier Type: Commercial
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.