PSA PA-9 Billet Glock®-style MOE EPT Adjustable brace Lower - 5165450178

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PSA PA-9 Billet Glock®-style MOE EPT Adjustable brace Lower - 5165450178


Quick Overview

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Must be 21 or older to purchase.

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

WARNING: This product can expose you to the chemical lead, which is known to the State of California to cause cancer and reproductive harm. For more information go to (CA Health and Safety Code Section 25249.6).

SKU: 5165450178
UPC: 5165450178

PSA 9mm Billet Complete MOE EPT SBA3 Lower designed to use Glock®-style magazines - Non Last Round Bolt Hold Open  

Machined from Billet 7075 T6 forgings and then hard coat anodized, these lowers are purpose built to accept 9mm Glock®-style magazines.  Designed to work with the Palmetto State Armory PA-9 9mm upper.  The lower is assembled with a Palmetto State Armory MOE EPT SBA3 Lower Build Kit.


Please check your local laws before ordering.  Not available for shipping to all areas.

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Lower Receiver Material: Billet 7075 T-6 Aluminum
Lower Receiver Finish: Hard Coat Anodized, Black
Fire Control Group: PSA Enhanced Polished Trigger (EPT)
Grip: Magpul MOE Grip, Black
Brace: SBA3 Adjustable Pistol Brace
Buffer Tube: PSA Pistol Buffer Tube
Magazine: Designed to fit Glock®-Style Magazines (Not Included)

Non Last Round Bolt Hold Open (NLRBHO)

SKU: 5165450178
SKU 5165450178
Brand Palmetto State Armory
Daily Deal No
Daily Deal Expires No
Youtube Video No
Free Shipping? Yes
Free Shipping Qty Label No
Free Shipping Qty No
SKU: 5165450178

Questions and Answers

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Browse 19 questions Browse 19 questions and 14 answers
does this only work with psa uppers?
Nathaniel P on Dec 26, 2018
BEST ANSWER: No It works with standard AR uppers and a 9MM Barrel. I am using another brand upper.
Could you use a Foxtrot FM-9 upper on this?
Tyler on Dec 8, 2018
BEST ANSWER: That’s what mine is on. 16” carbine length FM-9
What is the difference between PA 9 and PX 9 lower?
Brian B on Nov 30, 2018
BEST ANSWER: PA-9 is a billet lower, the other is not from what I know.
Does this come with a 9mm buffer and spring?
Keith K on Jan 3, 2019
BEST ANSWER: Yes it comes with a 9mm buffer and spring
Will the Pa-9 be registered as a pistol?
john m on Dec 8, 2018
What version glock magazine does it work with. Glock 17 mags?
chris n on Mar 31, 2019
BEST ANSWER: Any 9mm double stack, I've used my G26 (10rnd) all the way up to the 30rnd+ mags.
What triggers fit in this lower? Will it take standard AR15 platform triggers, ie. Geissele SSA-E, Fostech Echo 2, Timney?
Chris D on Apr 17, 2019
What is the difference between PA 9 and PX 9 lower? I see the mag well difference. Does it take a different upper? Is it better or newer than the PA-9?
Chris on Dec 9, 2018
BEST ANSWER: the pa9 is a billet lower receiver the px9 is not.
Does this have a last round bolt hold open with glock mags?
Question on May 10, 2019
With the mag well being based on the Glock 17, will 40 cal mags work with this lower?
Dillon J on May 14, 2019
BEST ANSWER: Dude you literally just asked this. I’m cruising looking for the same answer.
Will this work with the the psa pa-9 gen 4 upper? Im looking at the 10.5 inch barrel
Chris on Jun 10, 2019
Do this 9mm lower work with any 9mm upper ?
Hardtop on May 1, 2019
this lower work w/ this upper PSA Gen4 ?
carlitod on Apr 22, 2019
PSA PA-9 Billet Glock®-style MOE EPT Adjustable brace Lower - 5165450178
PSA PA-9 Billet Glock®-style MOE EPT Adjustable brace Lower - 5165450178
PSA Gen4 4
PSA Gen4 4" 9mm 5" Lightweight M-Lok Railed Upper - With BCG & CH - 5165450004
BEST ANSWER: It should work ! I set mine on a Colt .223 lower w/ magwell adaptor using 9mm colt mags .Ran flawlessly !!! The chamber is conical so no feed ramp is needed, so feeds straight in.I would get a slightly longer BBL. 6,7 or 8"so u can use a supressor because end of threads are inside handguard, a pain !
Is this a polymer mag release? And if so I there a steel one that can replace it?
Corey T on Mar 31, 2019
BEST ANSWER: Yes, it is polymer. So is the release on a glock. Dont worry, you won't wear it out.
What is the 9mm buffer weight comes in this lower?
S C on May 17, 2019
I second the trigger question. Will this work with AR-15 Franklin armory binary trigger systems?
Joshua J on Apr 18, 2019
Since this is registered as a pistol will it come with any documentation excluding it as a nfa sbr since it has a brace?
Hoganj on Apr 15, 2019
How do I know which PSA upper I have and what will fit??
titan on Mar 27, 2019
Can we get this in California?
TurboWRX on Jan 4, 2019


4.8 / 5.0
4 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Great lower. Trigger is nice and smooth. Wish it had last round bolt hold open.
Love it
Love it
June 11, 2019
Best AR 9 Lower on the Market
I am more than impressed with the quality of this lower! Fit, finish, QC, and price is amazing! Get your lowers now while they are so affordable. I set a BCA upper down on it and perfect fit. You cannot beat these PSA lowers anywhere!! You guys have a big fan now. I have several of ya'lls lowers now and every one of them is top shelf!
May 17, 2019
I am a HUGE fan of 9 mm AR15's and have several uppers from different companies. I wanted a dedicated lower after having so much fun with the uppers and using a "mag well" insert. The quality of this is great and you can't beat the cost. Check out the full review and see what you think.
User submitted image
Added May 6, 2019
May 6, 2019
This is very nice lower!
I just picked up this lower from my FFL. The cut and finish is very nice. The 9mm lower attached to it very snug. The Magpul grip is very comfortable! The trigger has a nice pull to it. I don't have a scale for it but it is a comfortable pull. I am looking forward to burning up some ammo tomorrow at the range.
This is the lower and upper together.

The upper is the PSA Gen4 10.5" 9mm 1/10 Nitride
This is the lower as it came in.
December 29, 2018

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