Originally from March 1944 production, subsequently arsenal upgraded to the M1D Sniper specifications, with many rifles so converted used during Korea and the Vietnam Wars. Features a winged blade front and T105 rear sight assembly, wide base gas cylinder with chamfered gas cylinder lock and cross slot lock screw, "6535382 SA" marked operating rod, and "D28287-19SA/B-13<>" marked bolt. Barrel marked "S-A-1-52", "T", and "P" under the operating rod with dark chamber. The trigger housing is marked "D28290-12SA," with a "5546008 HR E" hammer, "C46015-9SA" safety, and unmarked stamped guard. Fitted with a smooth pistol grip stock with absent inspection cartouche a circled serif "P" proof on the underside of the grip. Includes a M84 scope, serial number "1102", with post-and-crosshair reticle, sliding sun-shield, rubber eyepiece, M1D screw mount, "MRT/10 52" marked leather cheek rest, M1907 style leather sling, and U.S. Anniston Army Depot marked shipping box.