I am selling a barely used BM 1/9 twist M-4 barrel and A-1 upper. It comes with Trijicon Front and rear luminous sights installed. Only shot 100 rounds of XM193 ammo. I bought this for 3 gun matches, but I am left handed and now want to go in that direction with my AR. Broken in according to Bushmaster guidelines and I take care of my stuff. Will ship in the bushmaster box that it was delivered. Perfect for your "Ideal Rifle". Does not include Charging handle or bolt. I can email a picture if you wish. Need to sell fast. I have a match coming up and my new upper on the way. You won't be disappointed in this one.