This Marlin manufactured third variation breech bolt Assembly is for the Glenfield model 75 semi-auto rimfire rifle and is in very good condition with light wear. This assembly consists of the third variation breech bolt, cartridge lifter roller, second variation firing pin, firing pin retaining pin, and the complete extractor assembly. (file photo)

Note: Marlin / Glenfield model 75 semi-auto rimfire rifles with the following serial numbers have been observed with this part: 26182957