Product Description
Bushmaster AR-15 M4A3 Complete 16" Upper Receiver, 5.56 - 1:9 Chrome Lined
This 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.
Upper Specs:
- Caliber: .223 Rem/ 5.56mm
- Upper Style: Flat Top A3
- Barrel Length: 16" M4 Profile
- Barrel Material: 4150 steel
- Bore: Chrome Lined
- Rifling: 1:9 RH Twist, 6 Lands & Groves
- M4 feed ramps
- Hard chrome lined bore & chamber
- Muzzle Brake: A2 Birdcage
- Gas System: Carbine Length
- Front Sight: Standard A2 Post w/ Bayo Lug & Sling Swivel
- Factory headspaced, test-fired and ready to use.
- Mfg. Part #: 91823
- Made in the USA by Bushmaster
NOTE: Complete AR-15 Upper receivers CANNOT be purchased with any complete (with lpk & stock installed) AR-15 lower receivers. Orders placed with both types of products will be amended.
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