This Remington manufactured receiver insert assembly is for the Nylon 12 bolt action rimfire rifle and is in very good condition with light wear. The receiver insert assembly consists of the receiver insert, receiver insert spacer, receiver insert spacer pin, cartridge stop plunger, cartridge stop plunger screw, and the cartridge stop plunger spring. (file photo)

Note: Remington Nylon 12 rimfire rifles with the following year/serial number have been observed with this part: (LJ) February 1962