This Remington manufactured first variation action bar assembly is for the model 12 slide action rimfire rifle in 22 S, L, & LR caliber. The overall condition is very good with light wear. This item consists of the first variation action bar, first variation cartridge stop, first variation carrier dog, carrier dog spring, and carrier dog pin.  (file photo)

Note: Remington model 12 takedown slide action rimfire rifles with the following serial numbers have been observed with this part: 124157

12-A: 3867, 30310 & 100823

12-C: