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Surplus Ammo & Arms M4 16″ Complete AR-15 Upper Receiver Assembly with Free Floated Handguard – 5.56 NATO 1:9 Chrome Lined
The Surplus Ammo & Arms M-4 16″ complete AR-15 upper Receiver offers unparalleled quality & accuracy with it’s enhanced features that come standard.These upper receivers are built to mil-spec & are ready to mount to any mil-spec AR-15 lower receiver. We take pride in the precision craftmanship & quality components that complete these upper receivers. Fully assembled.
Upper Receiver Features:
- Caliber: 5.56mm NATO
- Upper Receiver: surplus ammo
- Gas Block: Standard Height Single Piccatinny Railed
- Front Sight: None
- Bore & Chamber: Chrome Lined
- Barrel Length: 16″
- Barrel Finish: Matte Black
- Barrel Profile: M4 Standard profile .750″ Diameter
- Twist Rate: 1:9
- Flash Hider: Standard A2
- Handguard: Surplus Ammo & Arm’s Free Floating Tubular, carbine length
- Additional Info: M4 Style Feed Ramps, Complete with charging handle.*All uppers have been head spaced and test fired for safety and to insure proper function.