AR-15 Bushmaster Upper 300 AAC Blackout 16" Chrome Lined Barrel Flat Top M4 Quad Rail 92866
This Bushmaster A3 upper assembly 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 7" twist, the 16" chrome lined barrel provides outstanding accuracy that has been enjoyed by competition shooters worldwide. Pre-ban style upper includes an AAC Blackout Flash Hider.
•Upper Receiver: A3 Flat-Top
•Barrel Length: 16"
•Barrel Contour: Medium
•Barrel Material: 4150 Chrome Moly Steel
•Muzzle Thread Pattern: 5/8"-24
•Chrome Lined: Yes
•Barrel Finish: Parkerized
•Twist Rate: 1 in 7"
•Chamber: 300 Blackout
•Bolt Carrier: Commercial
•M4 Feed Ramps: Yes
•Muzzle Device: AAC Blackout Flash Hider
•Gas System Length: Carbine
•Gas Block Diameter: 0.750"
•Handguard: Quad rail free float