Specifications: Calibers: .308 Win 20" blue barrel threaded and suppressor ready ( A 1/2 "-28 ) 4lbs 7oz 1 Piece Picatinny Rail Flush Detachable Mag Stocky's Stock Limbsaver Tool-less Firing Pin removal Machined Receiver and Forged bolt Large Integral front barrel lug Bolt has integral bolt handle and pressure vent holes One of the safest actions on the market Reliable M-16 Style extractor/ejector Stringent and exacting headspace specs Bolt faces are true and square to the chamber