This is a NEW breechblock (BOLT) Remington model 12 pump .22. Bolt accommodates the FLAT firing pin part number (rp7 or rp55 rop). This bolt is STRIPPED and is NOT complete. You will need the following Winchester parts to complete this bolt, firing pin (rp7), firing pin spring,(rp51??a rop / rp9) the firing pin spring guide (rp57?? rp10) extractor (rp15?) extractor plunger (rp55-a rop / rp12) extractor plunger spring (rp55-b rop / rp11)
