Pc Carbine stovepipe problems

Hey y’all,

Just sent around 250 rounds through my brand new out of the box pc carbine… I used the 17 round mag that came in the box, didn’t change out to the Glock mags. Every magazine I had a minimum of 2 stovepipe failure to eject problems. Now, I did NOT clean the gun prior to taking it out today, so I’m hoping this is the problem. I will clean it before I take it out. Looks like this is a problem a lot of folks have dealt with. Have y’all had these problems straight out of the box though? Was using 124 grain blazer brass.

Thanks.