22 chippa upper

So I bought a chippa 22 upper at a gun show a couple weeks ago. Only thing left from it is the barrel bolt and mags but when I shoot it the mag doesn’t want to feed right and I waste a bunch of rounds. Would this be fixed by using another brands mags?

I also bought a Chiappa upper, also am only using those same parts. Have you completely stripped bolt down and deburred/polished contact areas? That is where I found issues with mine. If it is your mags, CMMG and Black Dog Machine are same design and will work.

i did take it apart and i bought a m&p mag and tried that. i think my trigger spring may be too light because the trigger will hit and sometimes it will fire and sometimes it won’t