This Remington manufactured receiver insert is for the model 510 bolt action rimfire rifle and is in very good condition with light wear. (file photo)

Note: Remington model 510 Targetmaster rifles with the following date codes (month and year of manufacture) have been observed with this part:

1939: PH (June 1939) & EH (October 1939)

1940: PJ (June 1940)

1941: EK (October 1941)

1942: LL (Feb. 1942), CL (April 1942) & OL (July 1942)

1947: LSS (Feb. 1947) & ESS (Oct. 1947)

1952: DYY (Sept. 1952)

1956:  AC (March 1956)

1965: OM (July 1965)

1966: BN (January 1966)