This Remington manufactured early variation breech block assembly is for the model 12 slide action rimfire rifle in 22 S, L & LR caliber and is in very good condition with light wear and some specks of rust staining. This breech block assembly consists of the early variation breech block, flat type (early variation) firing pin assembly and the extractor assembly.  (file photo)

Note: Firearms with the following serial numbers have been observed with this part: 3867, 100823, 229853, 374065, 500140, 597770 & 607712.

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