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

Observations: the second variation breech bolt has the wider cut on the left side designed for the third or later variation charging handle