PSA Gen4 4" 9mm 1/10 M-Lok MOE EPT Shockwave Pistol, Flat Dark Earth - 5165450151

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PSA Gen4 4" 9mm 1/10 M-Lok MOE EPT Shockwave Pistol, Flat Dark Earth - 5165450151


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: 5165450151
UPC: 5165450151
MFR#: 5165450151

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 5" 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, Flat Dark Earth
Stock: KAK Industries Shockwave Blade, Flat Dark Earth
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 5" 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: 5165450151
SKU 5165450151
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: 5165450151

Questions and Answers

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Browse 7 questions Browse 7 questions and 4 answers
Is the BCG compatible with a Echo II trigger??
Neil G on Nov 26, 2018
Bolt open with last round?
Noel C on Nov 29, 2018
BEST ANSWER: "Does not include last round bolt hold open feature."
Is this considered sbr because of the blade stock? Could it be built with a arms brace and not have to get the sbr stamp?
Diuck D on Dec 5, 2018
BEST ANSWER: The blade counts as an arm brace. This is not an SBR.
Aren’t Glock mags supposed to run in this pistol? The only review sounds like a NO. I have a lot of Glock mags and that’s the only thing holding me back on a purchase.
James N on Dec 19, 2018
BEST ANSWER: All my Glock mags work fine in mine. I have original factory, ETS, and Korean versions. I have previously disassembled and polished the interior of the Korean mags
can this be set up for ambidextrous controls?
Aaron H on Dec 11, 2018
What is the overall length of this gun?
Gregory F on Jun 1, 2019
Do normal milspec barrel fast Take down pins pins work on this lower?
Dennis M on Dec 4, 2018


4.5 / 5.0
4 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
great shooting
First PSA purchase, extremely satisfied. It shoots great, no problems whatsoever. love the look and feel of this gun, cannot wait to purchase more from Palmetto in the future
February 23, 2019
4 months ago
Accurate pistol, fun to shoot but limited attachments and poor customer service.
Accurate pistol!

The draw back is the shroud. The flash can interferes with any type or lengthy of attachments to the sides or bottom. There is one useful "M" lol at the 3 and 6 O 'clock position. The position allows along attachment.


If you are thinking of adding a light or laser, it needs to be mounted on top.
January 22, 2019
Fun gun!
Pistol runs like a top. Build quality is very good. Acceptable accuracy, ran around 400 rounds through it so far with no issues with different ammo types. Cycles very quick, guaranteed to put a smile on your face.
December 22, 2018
Great pistol
If looking for a range toy or home defense weapon I would recommend this pistol.

Also, anyone know if the Glock 17 9mm 33 round mag should fit this AR9?
I have several new G17 33 round mags and it will take a sledge hammer to get the mag all the way in so they may be useless for this application.
December 10, 2018

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