This Remington manufactured firing pin retaining pin is for the early model 12 takedown slide action rimfire rifle that uses the flat type firing pin and is in very good condition with light wear.  (file photo)

Measures: .079" x .480" +/-

Note: Remington model 12 takedown slide action rimfire rifles with the following serial numbers have been observed with this part:

12-A: 3867, 100823 & 374065

12-C: 229853, 247236, 408616, 409187, 500140, 597770, 600364 & 607712