Surgeon 591RSARH308MP-BLK: 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 MAGPU PRO - FINISH BLACK - MAGAZINE MAGPU PMA - OVERALL LENGTH 39.5 - WEIGHT 11.5 LBS.