Bushmaster A3 Patrolman .223 Rem/5.56 16" Barrel Flat-Top Complete Upper Assembly – 91822

Features:

Built on the versatile Bushmaster modular MSR upper platform
Barreled upper receivers can be used on existing MSR-type lower receivers
Bushmaster 4150 chrome moly vanadium steel barrels feature hard-chrome lining in both bore and chamber for extended barrel life
All receivers feature integral brass deflectors and hard anodized finish
Each assembly is factory headspaced, proofed, test fired and ready to use
16 inches M4 barrel chrome-lined in both bore and chamber
Detachable carry handle
Front sight post with bayonet lug