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


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Bushmaster AR-15 A3 Patrolmans Upper Receiver

The Patrolman is the classic M4-style upper assembly, featuring a mil-spec, forged removable carry handle for shooting with iron sights or optics. It will drop-in to virtually any standard AR-15 lower receiver. Complete with a standard A2-style dual aperture rear sight in a removable carry handle with adjustable windage and elevation, 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.



  • Upper Receiver: A3 Flat-Top
  • Barrel Length: 16″
  • Barrel Contour: M4
  • Barrel Material: 4140 Chrome Moly Matte
  • Muzzle Thread Pattern: 1/2″-28
  • Chrome Lined: Yes
  • Barrel Finish: Chrome Moly Matte
  • Twist Rate: 1 in 9″
  • Chamber: 5.56x45mm NATO
  • M4 Feed Ramps: Yes
  • Muzzle Device: Flash Hider with Bayonet Lug
  • Gas System Length: Carbine
  • Gas Block Diameter: 0.750″
  • Handguard: 2-Piece M4 Style
  • Sights: A2 Fixed Front, Dual Flip Rear with Removable Carry Handle
  • Bolt Carrier Assembly Included: Yes
  • Bolt Carrier Type: Commercial


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