Bushmaster AR-15 A3 Flat Top Upper Assembly 5.56 NATO/.223 Rem 16" Barrel

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This drop-in upper will attach to virtually any standard AR-15 lower assembly. Comes complete with charging handle, bolt and bolt carrier assembly, it is ready to pin to a complete lower assembly without modification. The A3 is a Flattop upper that gives the shooter versatility when it comes to mounting accessories or optic devices.

Specifications and Features:
Caliber: 5.56mm NATO (.223 Rem)
16" Chrome Lined Barrel
1/9" RH Twist Rate
A2 Flash Hider