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Bushmaster XM15 AR-15 5.56mm A3 Upper Receiver Assembly 16"


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Bushmaster XM15 A3 Complete Upper Receiver

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



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