91823 : XM15 AR-15 A3 Upper Receiver Assembly 5.56 x 45mm Nato 16" BBL
The Bushmaster XM15 A3 upper will attach to virtually any standard AR-15 lower receiver. Comes complete with charging handle, forward assist, ejection port cover, bolt and bolt carrier assembly. With a 1 in 9" twist, the 16" chrome lined barrel provides outstanding accuracy that has been enjoyed by competition shooters worldwide. Pre-ban style upper includes a bayonet lug and flash hider. Supplied without a rear sight.
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|Receivers||OLD-Upper Receiver Assembly|
|Note||1/2-28 Muzzle thread|