The O.R.C. (Optics Ready Carbine) Upper is designed for shooters who intend to add optics such as holographic sites, scopes, or red dots. Flexibility and performance make it a great gun for patrol officers. Various add-on rear iron sights can be easily attached to the flat-top Upper Receiver, and Bushmaster's BMAS Front Flip-up Sight for V Match Rifles (Part # YHM-9360K) can be mounted over the Milled Gas Block. The premium 16" M4 Profile Barrel is chrome lined in both Bore and Chamber to provide Bushmaster accuracy, durability and maintenance ease.
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