my hammer spring was backwards. I am surprised it fired

At least it's back together! Shouldn't walk any more

Thanks Synyster!

I have a SLR adjustable gas block on the way but I ran into trouble getting the barrel nut off. My wrench doesn't fit around it!

What kind of wrench will work on the PA10 barrel nut? The PRI DPMS/KAC wrench says it won't work on "DPMS Delta ring barrel nuts"

Hammer and a punch Good luck getting it back on, though

Interesting question, though.

I might just try increasing the opening in my wrench with a dremel depending on how much it needs and how hard the steel is

Hopefully this fixes things. I put an SLR Sentry 7 clamp on adjustable gas block on underneath a UTG pro handguard and turned the gas wayyyy down. Not sure when I'll get to test fire it yet though

Good luck! Playing with adjustable gas blocks sucks at the range. Load one round in the magazine and fire. Leave the adjustment just a bit higher than where it reliably locks back after the last round.

Also - Monday makes 3 weeks mines been gone

7/4 Update.  I put a PSA "blemished" carry handle rear sight on my SS 20-inch upper and got to the range today for my first chance to get some rounds downrange.  After cleaning the rifle and bolt I put a light coating of high temp grease on the bolt lugs and the bottom of the bolt.  I shot 10 rounds of Federal M80 7.62 factory ammo with no malfunctions and started adjusting the iron sights to get fairly close to center at 100 yards.  After that I pulled the bolt to check for wear and chips--a small amount of wear but it all seemed normal.  I then set a target at 300 yards and shot 30 more rounds with the same iron sights-- I stopped after the first 10 and pulled the bolt to check for wear--nothing unusual and no chipping as other have reported.  No failures to eject the entire day.  I shot the last 20 rounds fairly rapidly and there were no hiccups at all--even the standard factory trigger did well. I haven't checked the bolt yet but all the rounds were on the target with no misses.  The bolt did not eat the brass and overall the rifle functioned very well.  I'm looking forward to adding a good scope and a free-floating handguard--that and reloading my own rounds may significantly improve the rifle's accuracy.

Good news! Hopefully mine shows up this week.

OK finally got to try my rifle out.

Works like a champ.  I bought the 18" middy PA-10.  SS bbl with NiB BCG.  Put about 100 rounds through it today.  No chipping whatsoever on the bolt lugs and the carrier wiped clean easily.  I ran her wet, probably a little too wet but it functioned fine.  I shot some real blemished CBC ammo that felt a little rough on the casing and they shot well.  I must say at first there is a little resistance to chamber the CBC but I attribute that to the cases being dirty and having a rough surface.  I won't tumble them but I may take a little steel wool to the OD and smooth the casings out.  Also ran some of the Federal Ammo that Palmetto sells and shot fine.  Even shot a few boxes of Herter's steel case ammo.  

Next time I will shoot for groups but it ran fine.  

Pros:  it's a 700 dollar AR-10 clone
Cons:  Not a big fan of the collapsible stock, rough ammo made the recoil spring seem weak to strip/feed the next round, heavy, still anxious over magpul mags.

I know I listed more cons than pros but don't get me wrong, it's a good rifle for the money.  Shooting good clean ammo helped with the feeding, Ejected everything that chambered, would prefer metal mags (DPMS metal?)
Ate brass and steel cased ammo, Others have replaced the collapsible stock with a fixed stock.  Any "problems" with this rifle can be easily resolved.  I would buy it again.

The adjustable gas block was the key to my success. My PA10 is working absolutely perfect now and I think it's my favorite thing to shoot. My bolt looks fine after shooting 100 rounds through it, the last 30 with the adjustable gas block on setting 4 of 15 with no failures to eject

Glad you got it figured out!

That is the AR15 unit correct?

I did not see it listed in the disc so I wanted to ask first.

It's the last part I need then I can go to the range and see what she will do.

Thank you

Update -

Got my PA10 upper back - I'm not sure how I feel. I got a letter from who ever repaired the upper stating they replaced the barrel and had no problems extracting/ejecting 20 rounds. Great!

Closer look shows one chip on a  bolt lug similar to what I sent it in for. The rear corners of two bolt logs have some kind of wear running down the whole side showing exposed metal. No idea what could even cause that wear. BCG fails the typical AR15 gas ring test (compresses under its own weight). I'll shoot this one till it breaks but I'm a bit disappointed at what I got back after 3 weeks.

Shot 30 rounds today. No problems. Think this might be a reasonably accurate rifle. ??

Of course I put 140+ rounds through it already.

Could you post a few pictures of the bolt? Is there any damage/chipping on the bolt lugs?