This Remington manufactured trigger guard screw is for the model 512 Sportmaster bolt action rimfire rifle and is in very good condition with light slot wear.  (file photo)

Note: Remington model 512 Sportmaster bolt action rimfire rifles with the following date codes have been observed with this part: (KK) May 1941, (XK) December 1941, (CL) April 1942, (APP) March 1945, (CSS) April 1947, (OSS) July 1947, (ATT) March 1948, (PZZ) June 1953, (RB) November 1955, (PC) June 1956 & (EF) October 1959