PSA Gen4  8" 9mm 1:10 7" Lightweight M-Lok MOE SBA3 Pistol - 5165450029

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PSA Gen4 8" 9mm 1:10 7" Lightweight M-Lok MOE SBA3 Pistol - 5165450029

In stock

Special Price $ 629.99

Regular Price: $ 799.99

Quick Overview

Must be 21 or older to purchase.

If you live in California, please read this notice before ordering.

It is the customer's responsibility to be aware of all applicable laws and regulations regarding the purchase and ownership of uppers with a barrel length of less than 16". Federal NFA regulations are applicable to this item.

WARNING: Handling firearms or firearms parts can expose you to lead and other petroleum products known to the State of California to cause cancer, birth defects, or other reproductive harm. Wash hands thoroughly after handling. For more information go to (CA Health and Safety Code Section 25249.6).

SKU: 5165450029
UPC: 5165450029
MFR#: 5165450029


Barrel Length: 8"
Gas System: Blowback
Barrel Profile: Heavy
Barrel Steel: 4150V Chrome Moly Steel
Barrel Finish: Nitride
Chrome Lining: None
Muzzle Thread: 1/2-36
Chamber: 9mm (9x19)
Twist Rate: 1 in 10"
Barrel Extension: Blowback
Diameter at Gas Block: N/A
Gas Block Type: N/A
Muzzle Device: Birdcage Flash Hider
Receiver Material: Forged 7075 T6
Receiver Type: Slick Side
Handguard Type: PSA 7" Lightweight M-Lok
Bolt Carrier Group Included: Yes
Bolt Steel: 8620
Bolt Carrier Profile: 9mm Gen4
Charging Handle Included: Yes
Lower Receiver: Forged 7075 T6 Aluminum
Receiver Finish: Hardcoat Anodized
Fire Control Group: Single-Stage, Mil-Spec
Grip: Magpul, Black
Buffer Tube: 7075 T6 Aluminum 
Adjustment: Fixed
Pistol Brace: Adjustable SBA3 Brace, Black
Magazine: ETS Clear Magazine, 31 Round

Add To:

Barrel: 8" chrome moly steel barrel. Chambered in 9mm, (9x19), with a 1/10 twist. The barrel is nitride treated for durability and finished off with a Palmetto State Armory 7" Lightweight M-Lok free-float rail and a bird cage style A2 flash hider. 

Upper: Billet 6061-T6 Slick side AR upper is hard coat anodized black for durability.  These upper receivers are made for us right here in the USA.

Bolt Carrier GroupGen 4 Hybrid 9mm BCG.  Nitride treated 8620 steel bolt, with an enhanced firing pin and external 5.56 style extractor. The bolt carrier group is compatible with most aftermarket fire control groups. 

Lower:. Forged 7075 T6 aluminum and then hard coat anodized, these lowers are purpose built to accept 9mm Glock®-style magazines.   Designed to work with PSA's new 9mm Hybrid uppers.  The lower is assembled with a Palmetto State Armory MOE SBA3 lower build kit with a Magpul Grip,  PSA 6 position buffer tube, and SBA3 Adjustable Brace.  Does not include last round bolt hold open feature.

SKU: 5165450029
SKU 5165450029
Department Firearms - Handguns
Brand Palmetto State Armory
Daily Deal No
Daily Deal Expires No
Unit Price No
Youtube Video No
Free Shipping? No
Free Shipping Qty Label No
Free Shipping Qty No
SKU: 5165450029

Questions and Answers

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Browse 87 questions Browse 87 questions and 61 answers
Last round bolt hold..... last round bolt hold...would purchase right now if this very set up had it. PSA, possible this is coming?
Elfster R&R on Jan 17, 2019
BEST ANSWER: Really wanted to get a PSA 9mm PCC, but LRBHO was a must. Ended up getting something else. If PSA starts offering a LRBHO option in the future, I'd definitely pick one up.
Can anyone recommend an appendix holster for this pistol?
Donnie on Apr 7, 2019
BEST ANSWER: Use your prison wallet
Will the law tactical or SB tactical folding brace adapters work with the PSA GX9 gen4 ?
john m on Jan 19, 2019
BEST ANSWER: You must remove the weight from the BCG and replace it with the folding brace insert.I just installed the Law Tactical Gen 3 on my PSA Gen4 8" 9mm 1:10 7" Lightweight M-Lok MOE SBA3 Pistol and took it to the range for 200 rounds of 124g FMJ and it works great.
Approx. How long until it is back in stock?
Brady L on Mar 2, 2019
BEST ANSWER: 87 minutes
Will this shoot 147gr without problems or only 115gr 9mm?
Donald H on Jan 17, 2019
BEST ANSWER: Mine shoots everything from 95 gr to 147 gr without any difficulty.
Does it work with a Glock mag?
Xiaowei Z on Jan 25, 2019
BEST ANSWER: I wish people would read the entire article/ description before they start asking questions. It would reduce a lot of ridiculous questions
Can I get the muzzle thread in 1/2-28?
Joe O on Nov 17, 2018
BEST ANSWER: No, thread is 1/2 x 36
What is the overall length? It may be helpful to have this spec on all listings.
Randy on Jan 24, 2019
BEST ANSWER: With brace retracted 24". Brace extended 26.5"
Does anybody know if the Fostech binary trigger would fit? I have seen some 9mm receivers that they would not go into.
dsoll on Jan 18, 2019
BEST ANSWER: You have to modify the bolt slightly to get it to work. Easy to do but has to be done. It. The Echo trigger will not work unless you modify the bolt 👍
Anyone know the weight?
Daniel L on Apr 22, 2019
BEST ANSWER: I bought the 4" barreled version of this gun, and it weights 5.1 pounds unloaded with no accessories. So I would imagine this 8” version would weight slightly more . . .
What kind of suppressor would be best on this build? Ie:: is this threaded good?? Size??
Mark P on Apr 10, 2019
Could I drop a bolt catch in this myself?
Wes F on Apr 10, 2019
BEST ANSWER: Yes, it’s held in place by a simple roll pin. Just have to push it out and replace. Very simple and easy.
Is the mag release steel or polymer?
Corey T on Mar 31, 2019
BEST ANSWER: It is steel on mine.
Can anyone recommend a specific BOLT CATCH for this pistol ??
John J on May 29, 2019
Do you have a relatively accurate weight for this please. Also, which Glock Mag does this take?
EVERYTHING M on Jul 12, 2019
BEST ANSWER: It will work with any Glock double stack 9 mag from 26, 19,17, 34 and the sticks from an 18.
How do you get the bolt to hold open on the last round ? What do you need to buy ?
John B on Aug 2, 2019
What is the weight of this AR? TIA...
RJ M on Apr 10, 2019
will this fit glock 19 magazines?
Bryant on May 23, 2019
BEST ANSWER: Works great with the 3 I have
This question Is already on the, but not answered. Can the weight be provided?
Alan L on Jul 11, 2019
When will this be available again?
Ray S on May 10, 2019
Is the upper forged 7075 T6 or billet 6061 T6?
ChillyWilly on Jan 18, 2019
BEST ANSWER: Lower is forged 7075 T6, upper is billet 6061-T6, read the description.
Does it come with 9mm buffer, and AR10 308 spring?
Stronger recoil springs are needed in straight blowback AR9's.
B A on May 4, 2019
I just ordered mine today!!!
So, which Glock magazines fit this ar9? Not familiar with Glock magazines. I know 9mm but that’s all. TIA
MARIO N on Aug 4, 2019
BEST ANSWER: Any 9mm magazine will work, from 10 round G26 mags up to the largest made.
Will any standard ar 15 / mil spec charging handle work with this pistol?
michael h on Apr 30, 2019
BEST ANSWER: I put a bcm extended latch handle and it works fine.
Does the AR-9 use the same grip as an AR-15?
Mark W on Apr 25, 2019
I just bought this Gen4 8" 9mm how many days for delivery?
RODOLFO F on Jul 13, 2019
Is it compatible with a gen 2 echo trigger?
Austin C on Apr 8, 2019
Will it take a KAK 9mm flash can?
Joe87 on Mar 17, 2019
BEST ANSWER: Yes it will and it looks great with it equipped. I have the KAK micro on it right now


4.7 / 5.0
35 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Initial look over: Decent
Everything is as expected. It's not a Noveske 9MM AR. The upper and lower have a bit of wiggle room, not a deal breaker. The mags however.... STICKY. I tried 4 types of Glock mags. The one it came with which is an ETS mag is pretty tough to pull out. Magpul mags were a bit easier but still not easy. Glock Brand Glock mags were terrible. Especially full. KCI mags worked the best. They' practically fell out from gravity alone. So far i'm pretty annoyed with the magazine situation. We'll see how it shoots at a later date.
February 7, 2020
Response from Palmetto State Armory
We do apologize for that. Please contact Customer Service with your order number so we may resolve this issue.
February 10, 2020
Casey S Staff
Pleasantly surprised
I am very happy with my purchase. If you are in the market for an AR9 don't hesitate to pick one up. I did have an issue which I will address at the end of my review.

I love the ability to use Glock mags, the overall quality of the firearm, and the recoil is extremely manageable. A "cheek brace" is not out of the question The price is more than reasonable in my opinion, Perfect for inexpensive range days.

Things I would consider changing. I do appreciate the velcro arm brace however I have to hunch over a bit to look down the sights. It would be fantastic to have the last round bolt hold open as well. Things I can live without but would make this firearm a perfect 10/10.

Ok, the bad.

Right out of the box during inspection everything seemed to be in working order until I inserted the ETS mag that came with the gun. I attempted to release it but could not get it out. I had to take out the takedown pin and actually push the mag out from the top of the receiver. I assumed there was an issue with the ETS mag. I picked up a standard Glock mag and had the same issue. After examining the mag release lever from the inside of the mag well it was obvious the release lever was not able to disengage the mag as it should. The lever itself had just enough extra material that the mags were getting hung up. I fixed it by simply taking a metal file and shaving the mag release down. No damage, and it now operates flawlessly.

This issue could be off-putting to someone that may not be used to hand tools. I have not heard of anyone else having this problem but I thought someone might find my experience useful.
January 26, 2020
Great, awesome and fun
This is fun to shoot, I love the overall length of this gun. I purchased it due to it being a 9mm and having the ability to use Glock Style 17 and 19 mags. I would like for the last round to hold open, but after a few mags I kinda got past that setback. Overall very reliable and fits easily into my small arsenal.
Very cheap red dot, keeps zero, just something recommended on  YouTube/amazon. Range use only $20
User submitted image
January 20, 2020
Nice, but...
Fun little gun to shoot. Worked flawlessly. Only problem was that after putting 50 rounds through it, the buffer tube was loose and would turn a few degrees. The Castle nut is staked and does not move, but the tube turns within it.
January 12, 2020
Wow, now everyone wants one...
Bought the 8” stock and threw on a Vortex Strikefire. Over 600 round and no issues with the provided mag or a Glock mag. Extremely fun to shoot. No FTF or FTE with 4 different brands of ammo. Better buy a lot of rounds....
December 24, 2019
9mm AR pistol
Got my 9mm about two weeks ago. Put on Ozark flip up sights and Vortex Spartan AR. Zeroed both sights and red dot with about six rounds each and all I can say is this set up is outstanding. Shoots groups of one inch at 25 yards. This pistol is built and solid as a rock. Took ball and hollow points without any malfunctions after 150 rounds. Don’t let this one get way it’s a keeper.
December 16, 2019
Great bargain for the money!
I have had one for a while and finally had a chance to install Franklin's trigger.. and it is a lot of fun and holds on target with a good red dot both eyes open..Put a large charging handle and a BAD lever of some kind. it makes life much easier. I could not find folding stock adapter plug, but with the SBA3 that's good enough for me. besides, I put the 200.00 from the LAWS.. towards the FTF or FTE. runs great with 124 grn. it packs small and wears good under jacket with single point and shorter Glock mags. I carry a spare smaller mag with the grip I bought that holds a spare mag. note: make sure you put a bottom and side thumb-hand-web area handstop.. just say'n....I came close to taking tip of finger off. it's short so watch careful about that..Once you fit two hand stops on bottom and weak hand side it holds hand in place..
December 13, 2019
PSA Ar9 Pistol Shooting And Review
PSA Ar9 Pistol Shooting And Review
2 min shooting, 2 min revisit
PSA Ar9 Pistol Shooting And Review
2 min shooting, 2 min revisit
PSA Ar9 Pistol Shooting And Review 2 min shooting, 2 min revisit
December 2, 2019
A great value when compared to the MPX.
This was a great purchase! So much fun to shoot (and cheaper than 5.56/7.62). Mine gouged the bottom of the BCG during the first 100 rounds or so, but after a touch up with a strip of sandpaper and another 100 rounds, all is machined to perfect function. After shooting the Sig and the PSA offerings, and seeing very similar performance, all the fun for 1/2 the price was a no brainer. Works great w/ a Romeo 5 red dot and Streamlight Protac.
Pretty basic, but a lot of fun!
Pretty basic, but a lot of fun!
November 28, 2019
Great purchase.
So far I’m very pleased. I had a couple of failures to feed on the 1st 25 rounds then it seemed to smooth out. After 150 rounds I polished the ramp and throat and gave it a good cleaning. It’s running like a top even with hollow points.
Accuracy seems pretty good at 25 yards considering it’s a 9mm with a Sig Romeo and cheap Winchester ammo I’m able to get about a 2-1/2” group. Don’t expect 1” MOA @100 out of any PCC. It ain’t going to happen. As far as last round bolt hold open it’s not really an issue to me. I just slightly modified a Magpul BAD lever an use it to lock the bolt back.
November 26, 2019

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