This Marlin manufactured first variation breech bolt Assembly is for the early Glenfield model 70 semi-auto rimfire rifle which uses either the first or second variation charging handle and is in very good condition with light wear. This assembly consists of the first variation breech bolt, cartridge lifter roller, first variation firing pin, firing pin retaining pin, and the complete extractor assembly. (file photo)

Observations: the first variation breech bolt has the narrow cut on the left side designed only for the first or second variation charging handle