Bushmaster AR-15 Patrolman M4 A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
- 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 Molly 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: F-Marked Fixed Front, Dual Flip Rear with Removable Carry Handle
- 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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