Wear and tear picture. Is this normal?

All factory built, came in one piece. The only exceptions are the safety selector, the charging handle and the stock/buffer system.

You guys have given me more help in the last couple of days than I could find in the last couple of years on my own. I am taking a couple of points from this discussion:

1 - If I can’t have parts for this weapon, it’s going to go into my safe and stay there. I don’t want any weapon system I can’t have multiple spare parts of each.
2 - I’m going to play around with the buffer system a little and see what happens.
3 -If nothing changes, I’m getting a Scorpion and call it the day. EVERYONE I train with has one and I’m still to see it malfunction like my AR-V9 does.

When you’re assembling a new build or swapping a buffer tube, especially if it’s a non-standard length tube, it’s a good idea to check your key clearance like this?

I’m usually around 9oz of buffer weight for most of my 9mm PCCs with a bolt weighing about 14 oz. I don’t have an AR-V so I can’t tell you what your bolt weighs. Your buffer sounds light to me but your bolt may be heavier than mine? I don’t run any of mine suppressed but would you need more buffer weight with a suppressor on to counteract the backpressure?

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LOL, good advice, I had just sent him this information in a message. You can learn a whole lot from School of the American Rifle. I actually use hydraulic lifter shims because they are made of stainless, Mazda makes a huge variable of sizes if you can still find them, or go to a engine machine shop and ask if they have any they are throwing out, just say you aren’t using them for an engine. The space crushed on the key is about 2mm and a quarter is about 1.78mm. Advised to use 3 quarters.

Happy PSA Anniversary @dbwchas

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Thanks bud, I would have joined sooner, but I did not even know there was a forum until I scrolled all the way down to the bottom of the PSA web site. I think they should put the forum link right at the top of the web site. With Bracketracer’s post I was watching some of the new SofAR videos. He’s got some PSA videos posted just a month ago. Honestly, this is something I was considering purchasing so I could swap out uppers on the fly.

@rockymountainjeep posted that one a while IIRC. Very good one.

Gents, you ROCK!!! This video probably explained the issue and actually gave me perhaps a little piece of mind…


I followed the instructions on the video (as above pics)… to my surprise, with the maxim PDW stock and this new 3-1/4 inch long heavy buffer I have on now, I still have some 2 inches before the carrier key will hit the rear of the lower receiver… However…


This is the original brace that came with the AR-V9. It is 2 inches longer. Plus the original buffer if I remember correctly was 2 inches shorter (give or take)… And it had the original buffer spring… That means the BCG was traveling another 4 inches back, which explains the damage…Also, now it explains to me why I was getting spent casings get behind and under the BCG into the trigger housing area… The whole thing was overtraveling rearwards… and it’s probably what caused the damage. It all makes sense now.

I only had (thankfully, in luck) only placed about 200 rounds through that original setup before I changed to the PDW stock, different spring and longer buffer… that explains I think why I have no more damage than currently to the receiver itself after 5K rounds… and why nothing is cracked or broken…

I’m hoping PSA will sell me/allow me to buy a couple of new BCGs so I can prove this theory… If I put a new BCG/charging handle in with the current set up and no more damage occurs, it would be sweet. I put in a customer service request (I hear they do honor their requests) to see if they will help me out.

Does this sound about right? I am open to learning from ya’ll if you have other theories…

Im having a hard time understanding this…

Your new setup (shorter tube) has a longer buffer?

No - I have one similar to that (Strike), the buffer is like 2” to 2-1/2” long (mem’ry here).

I have it for a 5.56 “cheek gun”.

I don’t know if I would ever use it for a 9mm blowback setup, but the buffer is tungsten and the spring is heavy.

Sorry, that was a little too much info…

Yes… new set up has a shorter tube with a longer buffer and stiffer spring so the BCG does not come even close to the rear of the receiver.

Now to the range to see if cycles ok.

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You might want to slow your roll a little bit there, friend?
That Maxim stock takes a proprietary length buffer weight. The factory pistol brace in your pic appears to be a SBPDW brace? I have one of those and it takes a standard carbine length buffer weight which would be longer than the Maxim buffer weight not shorter. Here’s a chart from Maxim that shows the weights they offer. What does your factory AR-V buffer weigh, the one that came in the SBPDW brace? And what does the buffer weigh that came in the Maxim CQB stock?

Thats where i was going with my thoughts. So too light a buffer in the CQB setup.

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What did the Strike PDW have in it ? That has the short buffer.

COMPATIBLE:
-AR-15 Mil-Spec receivers
-Angstadt Arms 9mm & PSA 9mm
NOT COMPATIBLE:
-Using a lightweight BCG may cause damage to PDW buffer
-9mm platforms not mentioned above unless you also purchase the Strike Industries AR PDW 9mm Buffer

[Thanksgiving Giveaway - #138 by Marcelo]

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This^^^* but hey PSA with their $1000 guns. They’re right up there with BCM :joy:

For real PSA forgot who they were. A decent entry level AR company. Now it’s $1000 this and $1500 that when you can get an actual upper tier for that price.

They won’t listen

They just keep pumping out guns for $1k wirh that kinda issues

Are you 100% sure there has not been an error re: buffer/buffer spring swaps; brace swaps, compatibility of parts with all of that.

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you’re only kinda right.

PSA still sells the very inexpensive 400.00 AR and 200.00 dollar upper reciever complete. But they wanted to expand and have a higher end line, hence the Sabre lineup, and they also designed and built the Jakl lineup which is a hybrid AK system, changed by them and their engineers. that you cant expect to be 400 bucks being a long stroke piston driven action.

remember psa’s goal is to spread 2a and the ownership of firearms all over to make things common use. i cannot blame them for wanting to have something for every size It is harder for me to come up with the 1000 yeah sure, but the fact is they’re trying to make something for everyone
PSA is still the greatest Gun company the us has seen in 100 years.

And why not have cool stuff for us peasantry as well! 2A, 2A, 2A.

Check your upper raceway for the gas key that wear is definitely abnormal. The can is causing more bolt velocity since it’s a direct blowback. You need a heavier recoil spring, or an adjustable gas block to restrict the gas pushing on the bcg. Honestly the gas key should never impact anything, not sure what it’s hitting unless your buffer tube is too long :thinking:

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This sounds right. Hope it went well.

I checked another ARV it was not staked either, simply because it is not under gas pressure and heat, and this is not called a “Gas Key” because it does NOT receive any gases for a gas operated system. It is simply a bolt “carrier key” for alignment and anti-rotation. While this is not normal from a stock gun from the factory. This particular gun has been modified multiple times in different configurations. Being an armorer, anytime I make a modification to ANY, ANY firearm, I test fire about 25 rounds, breakdown, exam, reassemble, and repeat until I am absolutely sure it it is 100% reliable and functional. I do not think PSA can be blamed for all the modifications this firearm has gone through. BUT, the lack of replacement parts still pisses me off. I have a “parts repair kit” and complete replacement BCG in my bag for every long gun I own, except the ARV. Now I know why, the ARV is no more. they are saving the parts for warranty repairs.
https://palmettostatearmory.com/pa-9-pcc/ar-v.html