PSA Gen4 4" 9mm 1/10 M-Lok MOE EPT Shockwave Pistol, Black

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PSA Gen4 4" 9mm 1/10 M-Lok MOE EPT Shockwave Pistol, Black

In stock

Regular Price: $ 759.99

Special Price $ 549.99

Quick Overview

free shipping Free Shipping applies to this item only and not the entire order.

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: 5165450852
UPC: 5165450852
MFR#: 5165450852

Barrel Length: 4"
Barrel Profile: Heavy
Barrel Steel: Chrome Moly Vanadium 
Barrel Finish: Nitride 
Chrome Lining: No
Muzzle Thread: 1/2-36
Chamber: 9mm (9x19)
Twist Rate: 1 in 10"
Barrel Extension: 9mm, Blowback
Muzzle Device: PSA Fluted Flash Can
Receiver Material: Billet 7075 T6 Aluminum
Receiver Type: Slick Side 
Handguard Type: PSA 6" Lightweight M-lok Rail
Bolt Included: Yes 
Bolt Steel: 8620, Nitride / Heat Treated 
Lower Receiver Material: Forged 7075 T-6 Aluminum
Lower Receiver Finish: Hard Coat Anodized, Black
Fire Control Group: PSA Enhanced Polished Trigger (EPT)
Grip: Magpul MOE Pistol Grip, Black
Stock: KAK Industries Shockwave Blade
Buffer Tube: KAK Industries Pistol Buffer Tube 
Magazine: ETS 31rd Glock Magazine

Add To:

Barrel: 4" chrome moly vanadium steel barrel. Chambered in 9mm (9x19), with a 1/10 twist rate. The barrel is nitride treated for durability and finished off with a PSA 6" Lightweight M-Lok Rail, and a PSA Fluted Flash Can muzzle device.

Upper: Newly designed billet 6061-T6 slick side upper is hard coat anodized black for durability.  Featuring T-marks, 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. 

Flash Can: Palmetto State Armory's new fluted flash can. This is a solid 6061 aluminum device that is designed to direct muzzle gases and the muzzle flash forward. Threaded 1/2-36 for 9mm.  Black military-style hard anodizing.   THIS DEVICE IS NOT DESIGNED TO REDUCE RECOIL, MUZZLE RISE, OR FLASH SIGNATURE. This device is designed to direct gasses and noise forward away from the shooter and enhance the weapon's appearance.

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 lower build kit with a Magpul Grip, PSA Enhanced Polished Trigger, KAK Industries Pistol Buffer Tube, and KAK Industries Pistol Stabilizing Blade.  Does not include last round bolt hold open feature.

SKU: 5165450852
SKU 5165450852
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: 5165450852

Questions and Answers

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Browse 29 questions Browse 29 questions and 21 answers
whats the overall length on this, fully collapsed vs fully extended?
mike h on Feb 13, 2019
BEST ANSWER: 19" collapsed to 23" extended
Still have not gotten an answer about +p or nato 9mm usage.Is it suitable for sustainable use with these rounds?
Teddy E on Feb 14, 2019
What is the overall length of this pistol?
Jason on Mar 23, 2019
BEST ANSWER: 23" with Shockwave fully extended
wondering why no one (not even PSA) can answer the OA length?
john c on Apr 3, 2019
BEST ANSWER: Well the upper receiver is standard length and the shock wave blade and buffer can be looked up and the it says how long the hand guard is so you could easily figure it out . However it's a pistol so it doesn't even matter who cares
Has anyone had problems firing hollow points with the 30 round ETs mags?
Mike R on Feb 20, 2019
BEST ANSWER: Mine has worked with every style of bullet I have tried including a number of hollow points.
What is the largest outide diameter silencer that could fit inside this handguard?
Chris Y on Apr 8, 2019
BEST ANSWER: The handguard barely clears the flash can; the flash can is 1.35”.
whats the overall length on this, fully collapsed vs fully extended?
bob j on Feb 13, 2019
BEST ANSWER: 19" fully collapsed, 23" fully extended
Can the law tactical folding adapter work on this pistol?
M-dew on Apr 3, 2019
BEST ANSWER: yes if your bolt has a removable weight in the rear
what type of buffer and buffer spring is used?
Jonah J on Feb 14, 2019
BEST ANSWER: This is my question as well.
Can the brace be removed to be held as a traditional pistol? Or is the brace legally required to be installed?
Jeremy on Apr 6, 2019
BEST ANSWER: You may remove it if you wish.
Does this require SBR license?
Richard H on Apr 3, 2019
BEST ANSWER: no its a pistol
whats the overall length on this, fully collapsed vs fully extended?
bob j on Feb 13, 2019
BEST ANSWER: 19" collapsed, 23" extended
Is there an adapter available to convert to 1/2 x 28 threads,... as are most 9mm cans???
Robert B on Apr 16, 2019
Got one of these recently. The handguard is an M Lok but I can’t see how a rail could attach as there doesn’t seem to be any room with the flashcan? Anyone mounted anything to the sides or bottom of the handguard?
AJ2248 on Feb 18, 2019
BEST ANSWER: no, the flash can doesn't leave enough room to allow m-lok mounting hardware. Everything is on the pic rail.
Would this be a pistol not a sbr?
Dayton D on May 1, 2019
BEST ANSWER: Yes, this is a pistol
Do standard AR15 rails fit on this gun?
Anonymous on Mar 31, 2019
BEST ANSWER: On the top side yes . Under the barrel the m loc holes are too close to the barrrl flat to allow anything there.
If I bought this, I would like to replace the buffer tube and brace with a folder. The buffer tube is not functional, right?
Thomas P on Feb 18, 2019
BEST ANSWER: Yes it is
whats the overall length on this, fully collapsed vs fully extended?
bob j on Feb 13, 2019
BEST ANSWER: 19" fully collapsed, 23" fully extended
Is it sold all put together or do I have to assemble ?thank you Derek Viana
Derek V on Feb 12, 2019
Does it lock open when empty magazine?
Wade B on May 14, 2019
Will a silencerco hybrid fit inside the handguard if I removed the flash can? What is the inside diameter?
Wesley on May 10, 2019
What’s the difference between this and the gx model?
Gordon on May 5, 2019
will an echo trigger work in this pistol?
jacob47 on Apr 12, 2019
Can the pistol brace be removed and firarm held and fired without a extension tube ?
Louis C on Apr 11, 2019
Will a Fostech trigger work on this?
Corey T on Apr 11, 2019
I just bought one of these. Gonna put a TRS-25 on it. Do I need a medium or high profile riser on this?
Kevin M on Apr 2, 2019
Will this work with a law folder?
JACQUES H on Feb 16, 2019
BEST ANSWER: If they make one for a 9mm designated buffer tube I don’t see why not.
LRBHO is not available even if paired with the PSA upper?
REGINO M on Feb 13, 2019
The lower specs say no LRBHO. How about when it's paired with this upper?
REGINO M on Feb 13, 2019


4.8 / 5.0
5 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
PSA 9 mm-what a blast
I oiled the bolt a little and put some grease where I had some wear on my other PSA pistol and put 200 rounds downrange. One round would not load in the chamber. Since I tried a couple of times I'm gonna charge that problem to the ammo and not the pistol. 100% reliable. Accurate as all get out too!
With MBUS and 62 year old eyes.
Vortex SparcAR II
May 10, 2019
Buckets O' Fun
Reliable, affordable, and well-made. Please note the OAL for those who've had questions.
OAL = 23"
OAL = 23"
May 3, 2019
Lots of fun.
Pulled this little gem out of the box, put some oil on the bolt and ran over a hundred rounds through it completely issue free. Ran with the ETS mags also. For my first pistol caliber AR I’m liking it.
User submitted image
Added Apr 26, 2019
April 26, 2019
Reliable Weapon
Runs perfect with Glock Magazines. Well built quality firearm
February 17, 2019
Yes! Do it!
This is an awesome little piece with a great price tag. There's a little wiggle between lower and upper but nothing awful. The shockwave brace would probably be better as an sb brace (at least) but out of the box it's still a wonderful little cqb option.

The stock mag isn't great. If it wasn't for that mag id have given it 5 stars, but it's compatibility with glock makes that a small issue.

*HAD PROBLEMS WITH FRANKLIN BFS* safety doesn't work. Everything else works fine.
February 13, 2019

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