Help with new Build Issue

[tappedandtagged]

I recently built an AR and am having issues. The rounds are not reliably strippingfrom the magazine and chambering. This is most prominent when trying to hamber a round by using the bolt release or manually. Didn't seem to matter how many rounds were in the magazine. Photos below. But first, build details:

Mega Arms forged lower
DSG Arms lower parts kit (including reciever extension, carbine buffer and spring)
BAD BCG (started with a brownells, but swapped it for a BAD when I thought the issue was bcg related)
Ballistic Advantage barrel
Magazines used are MOE Pmag, Troy, Lancer, Bushmaster factory and a variety of surplus/DRMO mags from the PD armory.