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 6.5 CREEDMOOR - BARREL HEAVY PALMA I MTU (HEAVIEST) - BARREL LENGTH 24 - TWIST RATE 1:8 RH - MUZZLE BRAKE THREAD & CAP - TRIGGER TRIGGER TECH - STOCK MAGPUL??? PRO - FINISH BLACK - MAGAZINE MAGPUL??? PMAG??? - OVERALL LENGTH 43.5