PSA Gen4 10.5" 9mm 1/10 Lightweight M-Lok MOE SOB EPT Pistol - 5165449802

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PSA Gen4 10.5" 9mm 1/10 Lightweight M-Lok MOE SOB EPT Pistol - 5165449802


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: 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: 5165449802
UPC: 5165449802
MFR#: 5165449802

Barrel Length: 10.5"
Gas System: Blowback
Barrel Profile: A2
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 9" 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, Enhanced Polished Trigger (EPT)
Grip: Magpul, Black
Buffer Tube: 7075 T6 Aluminum 
Adjustment: Fixed
Pistol Brace: SOB Brace, Black
Magazine: ETS Clear Magazine, 31 Round

Add To:

Barrel: 10.5" 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 9" 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 EPT SOB lower build kit with a Magpul Grip,  PSA 6 position buffer tube, and SOB Brace.  Does not include last round bolt hold open feature.

SKU: 5165449802
SKU 5165449802
Department Firearms - Handguns
Brand Palmetto State Armory
Daily Deal No
Daily Deal Expires No
Unit Price N/A
Youtube Video No
Free Shipping? No
Free Shipping Qty Label N/A
Free Shipping Qty N/A
SKU: 5165449802

Questions and Answers

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Browse 13 questions Browse 13 questions and 11 answers
Hey PSA, what the heck is a "Gen 4 Hybrid BCG"? How is it different from 1. a G-9 Hybrid BCG, 2. a G-9 BCG or a, 3. G-3 BCG?????
AZHTfreak on Nov 12, 2018
What's the overall length?
Kimbo on Oct 29, 2018
Can you run +P ammo thru it?
Joe P on Nov 8, 2018
BEST ANSWER: Yes but you will want to use a heavier buffer and a heavier action spring to tame the extra force.
Does it take glock magazines ??
Jaydlg on Oct 25, 2018
BEST ANSWER: these lowers are purpose built to accept 9mm Glock®-style magazines.
Does this hold the bolt open on the last round? Thanks
Ambrose B on Nov 18, 2018
BEST ANSWER: No. In description it says it doesn’t
What is the total weight? It says light weight in description. I want to know before I purchase.
Brian B on Nov 30, 2018
I am just wanting to confirm this is classified as a pistol? Not a short barrel rifle. Is this still classified as a brace like the blade or a stock? Thanks for the help.
Ambrose B on Nov 18, 2018
BigBlockNBK on Feb 13, 2019
PSA Gen4 10.5
PSA Gen4 10.5" 9mm 1/10 Lightweight M-Lok MOE SOB EPT Pistol - 5165449802
PSA 16
PSA 16" SOCOM PCC 9mm 1/10 Nitride Barrel - 482618
New Frontier Armory Premium 9mm 16
New Frontier Armory Premium 9mm 16" 1:10 Twist Barrel - BBL-9P-16
BEST ANSWER: Either should work but it will require the proper tools to install and apply correct torque.
Does this accept after market drop in AR15 triggers?
John S on Nov 27, 2018
BEST ANSWER: Drop in triggers should be specifically designed for AR9s. Random AR15 trigger may not reset, fire out of battery or double fire. Initially I tried an Elftmann AR15 trigger and it failed work. I replaced it with an Elftmann trigger specifically designed for 9mm and it worked fine.
Can the “buffer tube” be replaced with an actual AR adjustable buffer tube so I can add a SB Tactical brace?
Brad H. on Aug 10, 2019
BEST ANSWER: Yes. I have it on mine.
Is the brace made of a rigid material or is it flexible similar to the Sig?
Gregory W on Dec 9, 2018
BEST ANSWER: The brace is overmolded rubber over rigid frame.
When will these be back in stock?
ROGER B on Aug 8, 2019
Can you take this stock off and replace it with any AR stock?
Robert N on Feb 14, 2019


4.0 / 5.0
4 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
It handles very well, looks great, very reliable no jams with any Winchester or Blazer Brass ammo. It is very accurate for a 10.5" barrel pistol. I shot 115 gr. FMJ ammo and very mild recoil. I am very well pleased with my purchase.
December 28, 2018
11 months ago
Pleased again
Great little at pistol. Haven’t tested it but it’s nicely assembled
December 26, 2018
11 months ago
Do not order this configuration
Was very excited to get this pistol. Looks great and USA made! Went to the range when I got it and after the first 45 rounds, the stock came undone. The buffer tube does not have an anti rotation channel on it that keys to the butt plate. Also minus a castle nut to secure these components. With the vibrations of the first 30 - 45 rounds it caused the buffer tube to loosen and rotate. There is no way to completely lock down the buffer tube to prevent rotation. The buffer tube retainer spring was then released into the receiver and jammed my fire arm. When this happened the buffer tube retainer spring was damaged. On another note, the charging handle makes contact with the pistol brace causing interference with charging the firearm as well and has left marks on the brace. It is not comfortable when I am charging the pistol because my finger tips drag over the top of the brace and I have to reset and make adjustments. Palmetto took it back for repairs and all they did is retighten it. When I spoke to customer service they said it was all they could do as this was the configuration I chose. I said this is obviously going to happen again and they should just fix it with a locking solution while they still had it and he said again we can’t do that because this is the configuration I chose. Lesson learned for me I suppose but there was no way for me to know the stock would not be locked in place. Every gun enthusiast i have shown this to has said it’s a poor design. I have never seen an AR style pistol that does not have a stock that is locked in place. The good news is that Palmetto is going to fix it every time this happens. All I have to do is send it in and go through the warranty process (says sarcastically). Because we don’t buy our expensive guns to rely on them to work all the time, 100% of the time...
December 17, 2018
Shoots like a dream.
Added a Sig Red Dot and shoots great. Have tried all bullet styles, weights from 115 gr. to 147 gr. and feeds and fires them all. Mil trigger is not bad at all, about 6.5 lb. trigger weight.
Only difficulty I had was the buffer tube/stock came loose as it is only hand tightened and does not use a proper castle nut to tighten to receiver. A drop of Loctite and all is good.
If you like AR rifles you will love this pistol. Pluses: Can shoot inexpensive 9mm ammo, far less muzzle blast than 223, can be used at ranges that only allow pistols, takes reliable Glock mags.
December 13, 2018

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