Custom Built AR-15, would cost over 1700 to Build. Only high quality parts were used. These Include: Rainier Arms Milspec Buffer Tube Kit Fortis Low Profile Standard Gas Block MFT Battlelink Utility Stock Mil Spec Rainier Arms Xtreme Tactical Compensator XTC Rainier Arms BCG – Phosphate Rainier Arms Forged Mil-Spec Stripped Upper Receiver Rainier Arms Raptor Ambidextrous Charging Handle - 5.56MM RA Mountain Series CHF 16" Barrel Rainier Arms Force Free Float System 12” Rock River Arms Lower Parts Kit Rainier Arms Upper Parts Kit Please