Don’t be offended but so far your choice of parts are not meshing well. I’m just trying to help and I’ll explain:
Your upper: moriarty is known to have out of spec parts, that’s why they are so cheap. Could be your upper, bcg... who knows.
Your lower: just look at the mountain of PSA headaches on here. Good news? Most of them are fixed with the correct recoil system, which PSA does not understand in the least. Please give us detailed measurements of that.
Now, your barrel is gtg. I doubt it’s a gas issue since you have other things going on, as mentioned in your op. Like dropping from catch to chamber a round. Pictures and detailed info are going to be a must. Tolerance stacking is almost certainly at play here. We can try to make it work but....
For what it’s worth, may want to start saving up for a matched receiver set and known bcg. Maybe even a stripped PSA upper would get you closer. Please reply with requested info for more help. Also, search our water boarding thread to see exactly what we are looking for