This Remington manufactured unmarked open sight step 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 Sportmaster bolt action rimfire rifles with the following date codes (month and year of manufacture) have beeen observed with this part: (CL) April 1942, (APP) March 1945, (CSS April 1947, (BTT) Jan. 1948 & (ATT) March 1948