The Surgeon Magpul Pro comes on a 591 Short Action that is known for strength and accuracy.  This action features a buit in 20 MOA MIL-STD 1913 rail and recoil lug.  By integrating the recoil lug into the action, Surgeon Rifles creates a longet tenon length and strengthens teh intire free-floating system.  The Magpul Pro has a folding buttstock and comes in a various colors and calibrations.