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