Product Details
This upper receiver is built for folks who want flexibility without the headache. It runs 5.56 NATO and has a quick-change 16.25" barrel, so swapping setups takes just a few minutes if you ever want to try something different. Everything you need is here - adjustable sights, the buffer system, bolt catch, compensator, even the ammunition links. It'll fit any standard AR-15 lower receiver and comes dressed in durable manganese phosphate finish.