Thread: 10/22 guru's

It’s hard to diagnose over the internet so take what I say with a grain of salt but given you said you polished parts of the bolt and your now getting slam fires and light strikes I would consider the possibility of grit residue in the firing pin channel causing friction or complete firing pin lock up.
Solution ? flush / clean and blast with compressed air or completely remove firing pin and clean it and the channel and reinstall and carefully test fire
Good luck