The Surgeon Magpul Pro comes on a 591 Short Action that is known for strength and accuracy. This action features a built-in 20 MOA MIL-STD 1913 rail and recoil lug. By integrating the recoil lug into the action Surgeon Rifles creates a longer tenon length and strengthens the entire free-floated system. The Magpul Pro has a folding buttstock and comes in various colors and calibrations. – SPECS – ACTION 591 SHORT ACTION – CALIBER .308 WIN MAG – BARREL HEAVY PALMA I MTU (HEAVIEST) – BARREL LENGTH 20 – TWIST RATE 1:10 RH – MUZZLE BRAKE THREAD & CAP – TRIGGER TRIGGER TECH – STOCK MAGPUL® PRO – FINISH BLACK – MAGAZINE MAGPUL® PMAG® – OVERALL LENGTH 39.5 – WEIGHT 11.5 LBS.