This Remington manufactured early variation magazine ring is for the model 550 semi-auto rimfire rifle and is in very good condition exhibiting a brown patina with some specks of rust. The early variation does not have the shelf below the threads that the late variation magazine ring has. (file photo)

NOTE: Remington model 550 rimfire rifles with the following year/serial numbers have been observed with this part: NSN: (OL) July 1942 & (WL) August 1942