Is the ar10 so popular that there’s never any parts
Next to the ar15, the ar10 may be the easiest rifle to get parts for.
@renfrewjim What part are you looking for?
I never see like striped upper or rifle stocks and buffer set. bought matching serial number set ar10 ar15 And only want to use psa parts on my ar10
As demand dies down, you will start to see more AR10 parts for sale. Everything has been going to complete upper and lower, but we will adapt as demand dies down.
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I built me Gen 2 back before the last shortage around 2016. Stuff became hard to find, but it all came back when the panic died down. Just hit the “Notify Me” buttons for the parts you want.
@Josiah_PSA I’m building out a Gen 3 upper and am in search for a rail. Should I be looking for a low or high DPMS profile rail?
@willardd11 Welcome to the forum! We are closer to DPMS low, but are neither high or low. I know some folks have found some rails that are almost spot on. I am going to bring in @bfoosh006 as he has the most knowledge as far as rails on our uppers.
Josiah is spot on… it is neither a High or a Low DPMS rail height.
And while that may be frustrating… remember, Large Frame AR’s have no milspec guidelines like the AR15. Ironically that is even why you see a High and Low DPMS height.
It is in between, the Low and High DPMS rail height shown at Midwest Industries webpage.
FWIW… the Odin Rifle Works wasn’t a dead on match either.
But, I elected to use the Midwest Industries High DPMS , over the Low DPMS. ( Tried both heights )
I decided on the High DPMS, because if I wanted to use a front sight base, I could always file some material off the front sight post if needed.
If you’d like I could measure the height difference, and / or take a photo of the difference in the rail height with the Low DPMS Midwest Ind. rail.
The height difference hasn’t made any difference for me… it is only slightly ascetically different.
And even then, if you were to use a IR laser and Illuminator the height difference would be negligible.
I’ll go dig that one out and take a photo
As best as I can measure… the height difference is around .055 when using the “Midwest High” on the PSA PA10 upper.
I should add, I have a few other OEM PSA PA10 / PA65 uppers / rifles, and the PSA FF tubes have been very good for me… good enough to not feel the need to change them to something else.
Plenty of room for the Adj. GB’s
Except for my 2 precision oriented PA65’s… those both wear Lancer carbon fiber FF tubes… I wanted zero chance of the .936 Adj. GB contact, ever. … and those both sport thick barrels.
Pics… please, feel free to ask any questions.
I forgot to mention… if someone buys a Midwest Industries 308 FF tube especially the ones using the shown barrel nut type.
Be sure to buy this as well.
You can see in the 1st and 2nd photo, the MI barrel nut doesn’t fully go on as far as the PSA barrel nut / handguard.
And that added difference will not hold a conventional length “Ejection Port Rod” in place… so you need the MI extended rod.
( the pics have the Extended MI rod )
https://www.midwestindustriesinc.com/MI-308-Long-Ejection-Port-Rod-p/mi-308ler.htm
Wise choice on using PSA parts.
The PSA PA10 uppers are going to be the best fit to the PA10 lower.
And for those assembling a bare PA10 lower… PSA’s PA10 LPK.
In more ways then you and I typically realize.
Again, that is because of the lack of a Mil-Spec guideline for ALL Large Frame AR’s. So its not just a PSA thing.
PSA uses quite a few DPMS pattern type parts… just saying this so we all don’t confuse Armalite AR10 pattern parts with what your PA10 needs.
Some typical differences, ( overall )
Bolt catches can vary quite a bit ( More on that in a minute )
Upper to lower connection pin lengths, measured specific slight differences at the locations, the OAL of the pins and even the diameter of some of the various manufacturers pins.
Mag catch location ( again slight differences, and More on that in a minute )
The FF tube picatinny rail heights , as seen.
Handgrip types and there fitment.
Those are just some that come to mind.
The “More on that in a minute stuff”.
And again, the lack of a Mil-Spec guideline comes into play.
And I need to point out that PSA PA10 /65 parts function very, very well as designed by PSA, provided you use their parts. ( Go figure… huh ? Ford Parts for your Ford… Chevy Parts for your Chev. … etc )
The PA10’s BCG axis rides a little higher… just a little bit.
So that effects the mag catch via the positioning of the mag. And the mags feed lips at the bolt. Not in a negative way at all, and I have tried many different brand mags, Lancer, Magpul, D&H, IWI, C-Products, Hexmags, and ELander… with zero issues. Use the PSA parts… no problems.
But the point is… that slight lack of a Mil-Spec guideline for all to use and adhere to , is going to mean differences between brands.
That same BCG axis location makes a difference at the buffer tube area as well.
I have seen other brand uppers that sometimes fit / connect to the PA10 lower ( with slight ascetic differences ) but once those are looked at for the same BCG axis… the PSA uppers axis is always off center compared to that different brand lower.
And that can effect reliable function, and produce bad wear.
Some will say… ehhhh… that doesn’t matter to much… But, it does.
That same axis difference , between a PA10 complete upper and another brand lower… means the locked in place mag is not “high” enough to properly, reliably feed. ( the mag catch differences )
It also effects the bolt catch function… slight height differences between a PSA part and another brand.
With all this said… and if I haven’t bored the crap out of you yet…
I love every one of my PA10’s and PA65’s.
They are a solid firearm and or foundation and a Working Mans priced Large Frame AR.
I have used PA10’s and PA65’s to produce some crazy precise Large Frame AR’s.
I first decided on using PSA because of the cost of them.
I have tinkered them into 100% reliable precision rifles as I see fit.
Doing any work by myself at home.
If I can do it… any mechanically inclined person can.
At a reasonable price.
Some of my best groups from my PSA’s
6.5CM, 10rds Horn. AG 140gr, 100yrds, benched , scoped… bla, bla, bla
A PSA OEM upper with a FN CHF CL .308 barrel, tuned with those same assembly tricks I use.
Also 10rds Horn. AG 155gr, 100yds, benched, scoped, rapidish fire.
And FWIW… The DC Machine barrels ( PSA owns them, and uses them ) are also great shooters.
I have another thread ( a different web site ) that shows what all I did to make the barrels perform up to my expectations.
All very simple to do , IMHO.
One other comment… before everyone thinks I am a goof ball and am over hyping myself… please note… I flubbed on shot in both of those pictured groups.
I psyc’d myself out enough to throw both those fliers, Lol
But Again… If I can do it… so can you.
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AR10 is my next project, this is helpful
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If you have any questions , ask away !
FWIW… I love all my PA10 / PA65’s , a great deal and solid foundation.
The Troy LP handguards are a perfect match. I’ve used the Troy Alpha Rail and the MLOK handguards. Both worked well.
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Hi all I’m an absolute beginner planning my first build, getting a piece at a time. Going to do an AR-10. Took advantage of the recent PSA deal on the PA10 Gen3 stripped lower - coming to my FFL any day now.
I would have gotten the lower parts kit as bfoosh006 suggested above, but it has parts I don’t want and plan to replace. I have my heart set on some upgrades to the trigger and furniture. Naïve I’m sure, but I’m up for the learning experience. Planning a different stock (does not come with a buffer tube or buffer), grip handle, and a drop in trigger.
I plan to purchase a complete upper, AP10 Gen3
My question is, what other parts will I need to order ala carte to make a complete lower (if it turns out the stock, handle, and trigger fit and function as I expect)? I will use all PSA parts for these, unless you suggest something else that you’ve had success with. Thanks all for any advice!
The DPMS Low is what I found to be the best match.
Bought a psa gen3 ar 10 lower receiver and would love to finish my build with psa parts but the stripped upper never seem to be in stock. Was looking at some bca stuff but heard they wont fit a psa pa10 lower does anyone know when psa will ever have them back in stock…
Bought the generation 2 PSA AR-10 lower waited forever for an upper to appear never did now everything’s generation 3 so the generation 2 is on the shelf wasted money because two and three won’t match it will but will look like crap
Also waiting on a GEN3 upper to continue my build. After doing a long search of possible uppers that could fit, I’ve ended up here still looking for answers.
While I’m here I can share with you what parts have worked on my PA10 lower up to this point.
- Rise Armanant Rave 140 trigger: Perfect Fit
-Aero Precision M5 Lower Parts kit (minus FCG/Grip): Perfect Fit
-Aero Precision M5 Enhanced Buffer Kit: Perfeft Fit
Magpul 4:1 Grip should arrive this week, I can keep y’all posted.
A concern I do have after reading above comments. I bought the Aero Precision BCG (.308), will I have any issues with fitment with the PA10 upper once it’s finally in stock?
The Aero 308 BCG will work fine.
I have used a lot of different brand BCG’s in my PA10’s and PA65’s.
As for any matching differences… Josiah said this years ago comparing Gen II to Gen III…
"Cosmetically, there are no differences between the stripped upper and lower.
Thanks,
Josiah "
The main concern between Gen II lowers and current Gen III uppers is , the lack of the cut outs on the Gen II lower, at the buffer tube threads.
I haven’t found it to be an issue, but others have.
It is a easy fix. But some thing to watch for.
As for availability, you have to be diligent, and order promptly.
I have done that for years.