This Remington manufactured outer magazine tube / receiver insert assembly combo is for the model 550 semi-auto rimfire rifle and is in very good condition with light wear exhibiting a mixture of original blue finish with a brown patina and containing some scattered specks of rust. This assembly consists of the outer magazine tube, receiver insert, receiver insert spacer and receiver insert spacer pin. (file photo)

NOTE: Remington model 550 rimfire rifles with the following year/serial numbers have been observed with these parts: (OL) July 1942