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

NOTE: Remington model 512 rimfire rifles with the following year/serial numbers have been observed with this part: NSN (CL) April 1942, (OSS) July 1947, (PZZ) June 1953, (RB) November 1955, (PC) June 1956, (EF) October 1959, (XF) December 1959 & (PH) June 1961