This is an exceptional example of a late WWII Springfield Armory M1C sniper rifle that was arsenal refurbished for Korea and is now fitted with a second pattern Stith-Kollmorgen MC-1 USMC sniper scope with the larger Griffin & Howe scope mount. The M1C sniper was develop in mid-late 1944 and was used throughout WWII, Korea and into Vietnam by both the Army and Marines. After Korea, the USMC developed the larger model Stith/Kollmorgen 4x scope and larger G&H mount and designated it as the "MC-1" sniper rifle. This is a late WWII rifle that was rebuilt for Korea which has a mix of WWII and later post war SA marked parts. It is fitted with a WWII barrel marked "1-S-A-X (unreadable)-45" with the breech parkerized. It has a post war operating rod marked "D6535382-SA", bolt marked "D28287-12-SA", "W.R.A. marked trigger housing and hammer, with an unmarked safety and milled trigger guard. The internal parts are also unmarked. It has a post-war rear sight assembly marked "DRC" with a wide base gas cylinder, round top gas cylinder lock and a "O" stamped, four slot gas plug. The receiver is fitted with a parkerized G&H type scope base (bracket) that has been renumbered (matching) on the side (not underneath) with "351 2160". As noted, this rifle has the MC-1 type G&H scope mount with the company address and patent dates on the top flat area with the flat locking levers. It is fitted with a first pattern Stith/Kollmorgen 4x power scope that is rolled marked on the rear eye-piece with "TELESCOPE 4XD MC-1/KOLLMORGEN OPTICAL CORP." and it has the standard fine cross-hair reticle. The top of the tube is roll marked "MC 1289-P". The telescope comes with a set of "Storm-Queen" marked rubber lens covers. The rifle is fitted with an walnut stock and handguard set, with a single circled "P" proof in the pistol grip area with no other proofs. It is fitted with a lace on leather cheek pad marked on the side "MRT/1 52". The rifle includes an Korean War era web sling ink stamped "MRT/XX" and an original Hart manufactured M2 flash hider. The majority of the M1C sniper rifles originally manufactured by Springfield Armory were rebuilt for the Korean conflict, with a considerable number destroyed by the Army during the 1980s.