About the only thing for the BCG to jam-against there is the gas tube hitting the key, or dragging against the magazine.
Photo-1 post 30, appears to show a little dinger on the inlet of the gas key. Could be just the photo - allI have to look at it with is a 7±generations-old iClown….
If you see the second picture on post 18 you will see the bcg open but not hold by the bcg bolt catch because it’s not all the way back.
Did you pruchase the complete kit from $600 from PSA?
Try a different AR15 M16 BCG in the rifle to see if that will
correct the issue. If the problems still occurs, contact PSA
for a warrenty repair? If you are member of AR15.com
You can contact Josiah in the industry forum for PSA
Throuh an IM. I am interested in your rifle. I am going to
build the same rifle with PSA rifle kit. I have the M16A4
lower receiver to build the rifle. Also, post on the forum
what you find out. Most PSA uppers are over gassed
to start with It has to be the BCG and or the gass tube
is misaligned and the bolt does not got into full battery properly.
Yes I purchased the whole kit, unfortunately PSA erased my old account where I had all my orders and I don’t have access to it now.
I’m going to use an aero precision bolt from another of my builds and see if it the problem because I checked everything on and in the rifle and everything looks good, there is no miss alignment with the gas tube, the bcg gets like stuck when goes back at the moment of the shot but I checked for worn-out or rubbing inside and I can’t see anything, if you see the pictures the bolt is back and stuck like 90% in one picture and the other it got stuck like 30% before going home and it wasn’t the mag, I tried magpul, Lancer, 2amend and metal ones, 3 or 4 types of ammo.
I tried several times manually pulling the charging handle and it works fine, no stuck at all.
Next week ill try the aero bcg and post the results, if I have to send it back to PSA I’ll do it.
I have lots of their guns and no problem at all except this one and everything I used for the build is PSA.
I finished a PA-10 2 days ago and I brought it yesterday to the range it shoots perfectly fine!
Try cleaning all that aerogell gook off everything and running gun oil. Maybe that aerogell is good lube but is hydraulically hindering, slowing the bolts movement. It may feel smooth when manually operating bolt, but at high speed hydraulic pressure may be increased exponentially. It’s just a hunch, but I’ve been around hydraulics along time. And it doesn’t cost you anything to give it a try.
I’ll try that too but it’s weird because my other rifles are lubed with aeroshell the same way and they work flawless.
I may be totally wrong, but like I said don’t cost nothing to try out…
This is where I’d try next as well. I could see it especially being a potential issue if PSA doesn’t over-gas their PA-10, but IDK if they do or not as I don’t own a PA-10. Is your bolt camming pretty easy? If you push your bolt all the way in and flick it with your wrist does it fling out like it should with no drag on it?
The bolt performs perfectly at battery, won’t stuck and extract / ejects perfect!
The problem is when I shoot and the bolt goes back to engage the new round it won’t go back enough to engage and sometimes like you can see in the pictures it get stuck.
surely sounds like a gas problem
Boy I’m totally stumped on what else to try on this one? I can only imagine it’s got to be some kinda gassing issue? Have you ever removed a FSP gas block? If you have the correct sized punch, and extra pins just incase one of them mushroom out or get egged out from removing, that would be my next move. I would visually check the gas port on the barrel and size it as well. I would run some weed eater trimming line, I always use 0.08" and feed it all the way through the gas tube, and then the FSP and into the gas port on the barrel as well to make sure nothing feels off or seems to be catching. If/when you contact PSA, please let us know what they say and what happens and how this turns out. I need to know lol
OK you guys, today I shot it for the second time after the last time it failed, I did it with my Aero precision BCG and I shot around 100 rds, it only gave me 2 or 3 non feeding, so for some reason the bcg didn’t go all the way to the rear.
When I got home I compared the two bcgs and I discover what is wrong at least with the PSA bcg, its out of specs and I’m posting pictures, my concern now is why still gave 2 or 3 issues even with the Aero precision bcg, I’m thinking something else on the upper might be out of specs too!
You can see the gas key is canted to the right and the grooves for the forward assist went over the rail surface
Look at the pictures and let me know your comments and please someone from PSA let me know if I have to send the whole upper with the bcg!
Thanks for the update! I would first try and call/email PSA on their Website, and not here on the Forums. Because PSA Customer Service isn’t on the forums. But I would absolutely let them know what things you’ve tried, the results and then see if they can give you a RMA and shipping label. Have them check over the complete upper, BCG, charging handle and all. I wouldn’t discount some kinda gassing issue, along with what you already know, like the BCG being out of spec for sure. Their may be other things on this upper that are out of spec ex: maybe the angle of the feed ramps? Possibly the upper BCG channel is tapering? I think at this point, sending in the complete upper to PSA and having them gauge and check it over would be the best options. That’s just my opinion. But thanks for the update! I really want to see what all the issues are here, and see the corrections to the point that it’s 100% functional and reliable 
I just sent them a message through the contact center so they can get to me so I can explain the situation.
Definitely I need to send the whole upper kit back so they can check whatever is going on with it, the first thing they should notice is the messed up bcg, I was checking meticulously the inside of the upper receiver and I couldn’t tell any thing wrong with it but they should check with their gauges, the rest of the kit that came in the order is installed in the PSA lower receiver so I don’t know if for certain the buffer and buffer spring are good according to specs.
Something besides the bcg is not letting go all the way to the rear once in a while.
Like I said, I shot today close to 100 rds of 3 different brands of ammo with the Aero Precision bcg and 3 or 4 times it didn’t feed, maybe it’s a gas issue on the upper, I don’t know!
I know it’s a bummer to get something new in, build it out and finally get to the range all excited for it to finally run and BAM! Some kind of issues. But with PSA along with any other big manufactures making thousands of these items daily, of course issues will slip through their QC systems. Thank God no one was hurt, and working with them will be easy to return the upper and they will make it right and fix whatever is wrong. Still sucks tho lol.
Most of my guns are PSA and never had an issue with none of them, the only concern I have is that I got the rifle kit SKU 8818 and used a PSA lower to complete the rifle so I don’t know if to send the whole thing or only the upper, I guess I’ll have to wait for their answer.
Hmmm that’s a good question? I’m guessing sending in the compete upper would be all that’s needed? But maybe not? After two years of looking, I finally found a Mossberg 590A1 Retrograde at a reasonable price. I paid my money, did everything at my FFL and got it home and found an issue while breaking it down and cleaning it before taking it out for the first range trip. It was super easy to contact Mossberg, they send the label and shipping box and even had it back to me within a month. The only downside was it had to go back to my FFL, even tho I sent it in privately, and I’m in a very free State. Hopefully you can just send the upper, they have many test rifles, both uppers and lowers I’m sure they can work off of. That way you won’t have any FFL fees again and or wait times.
You’re right, they might be able to find what is wrong with it, I remember the first time I shot it I probably spent 60 to 80 rds and no problem, next time I went to the range to zero the iron sights it begun having the issue.
I’ll might have an answer from PSA tomorrow, I hope!
I’ll keep you guys posted.
You may have said this but how is the gas tube? Is it messed up at all?
