How would you like to instantly turn your "last minute" AR-15 into a sub MOA Tackdriver? Just slap one of these uppers on it. Here are the particulars: Anderson MIL SPEC Upper Receiver 16” Heavy Barrel 1-8 TWIST. Chambered in .223 Wylde, with M4 Feed Ramps on Barrel Extension. Carbine Gas set up, 11 degree Target Crown, Manganese Phosphate finish. PSA Premium Full-Auto Bolt Carrier Group. Seekins 15" Keymod Floating Rail/Handguard YHM Charging Handle Price: $600 Located in Littleton. I will ship these for a reasonable fee, and/or meet up with you a reasonable distance from Littleton.