Bushmaster AR-15 Dissipator A3 Upper Receiver Assembly 5.56x45mm NATO 16" Fluted Barrel

Product #: 711490 Bushmaster #: 92328 UPC #: 604206923288
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  • Information

This Dissipator style A3 upper will attach to virtually any standard AR-15 lower receiver. Comes complete with a removable carry handle, charging handle, forward assist, ejection port cover, bolt and bolt carrier assembly that is properly staked. With a 1 in 9" twist, the 16" lightweight fluted barrel provides outstanding accuracy that has been enjoyed by competition shooters worldwide. Pre-ban style upper includes a bayonet lug and flash hider.

Technical Information


  • Upper Receiver: A3 Flat-Top
  • Barrel Length: 16"
  • Barrel Contour: Fluted HBAR
  • 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, Rifle Length
  • Sights: Removable Carry Handle, 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. 

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