PSA Gen4 16" 9mm Nitride 1/10 15" Lightweight M-lok Railed Upper - With BCG & CH

More Views

PSA Gen4 16" 9mm Nitride 1/10 15" Lightweight M-lok Railed Upper - With BCG & CH

In stock

Special Price $ 329.99

Regular Price: $ 479.99

Quick Overview

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

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: 5165451260
UPC: 5165451260
MFR#: 5165451260


Barrel Length: 16"
Barrel Profile: A2 Style
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
Muzzle Device: A2 Style Flash Hider
Receiver Material: Billet 7075 T6
Receiver Type: Slick Side 
Handguard Type: PSA 15" Lightweight  M-Lok Rail
Bolt Included: Yes, (Gen 4, Hybrid)
Bolt Steel: 8620, Nitride Treated 
Charging Handle included: Yes

Add To:

Barrel: 16" 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 15" Lightweight M-Lok free-float rail and a 9mm birdcage flash hider. 

Upper: Billet 7075-T6 A3 AR upper is hard coat anodized black for durability.  These slick side upper receivers are made for us right here in the USA.

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

SKU: 5165451260
SKU 5165451260
Department Uppers
Brand Palmetto State Armory
Daily Deal No
Daily Deal Expires No
Unit Price No
Youtube Video No
Free Shipping? Yes
Free Shipping Qty Label No
Free Shipping Qty No
SKU: 5165451260

Questions and Answers

Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 20 questions Browse 20 questions and 18 answers
I will be using a lower with the EndoMag 5.56. to 9mm converter with this upper. Does the barrel have a pronounced feed ramp at the bottom or does the barrel entry have a uniform even chamfer around the entire circumference?
Bernard A on Mar 22, 2019
BEST ANSWER: I have this upper, I just snapped some pictures and sent an email to mean arms. Will update as soon as I hear back.
Is this upper Compatable with a glock style lower?
Tyler C on Mar 21, 2019
BEST ANSWER: Yes it is if you are using PSA Glock lower. I can’t guarantee if it’s another brand. PSA uses a lot of proprietary parts.
do you have to change the buffer spring when using on an ar15 receiver?
STEPHEN J C on Mar 31, 2019
Will this work with a stern defense glock mag insert?
Daniel F on Apr 18, 2019
Is this upper compatible with a Spikes Glock mag lower?
Manuel F on Apr 20, 2019
BEST ANSWER: Absolutely. That’s my setup
Will this upper work on the older PSA Colt stye lower receivers?
Jack D on Apr 24, 2019
does this only work with psa 9mm lower or will it work with spike tactical 9mm glock lower?
boomer on Apr 15, 2019
BEST ANSWER: It should be able to use it on the spikes
Will this fit a CMMG lower ?
Roger M on Apr 24, 2019
BEST ANSWER: It should
I'm new to changing uppers. How do I modify the lower to accept this? I have a stag 556.
Steve on Mar 24, 2019
BEST ANSWER: You'll need to purchase a magazine conversion kit to allow a 9 mm magazine to fit in your AR mag well.
Will an A2 stock and buffer tube work on the AR 9 lowers?
Everett on Apr 19, 2019
BEST ANSWER: Yes, if it will fit a standard AR-15 lower it will fit this.
Is the PSA Gen 4 compatible with 80%-Lower Brand lower AR-9 lower receiver?
Ron Z on Apr 28, 2019
is this upper compatible with spike tactical 9mm lower ?
boomer on Apr 17, 2019
does this only work with psa 9mm lower or will it work with spike tactical 9mm lower?
boomer on Apr 15, 2019
Can this be used on a PSA ar 9 pistol lower? Probably so. But wanna ask before I buy.
Robert R on Sep 15, 2019
BEST ANSWER: You can if you like to but the ar 9 pistol is anything from 4" to 10.5", the psa 16" 9mm is more of regular carbine ar not really a pistol. Hope was helpful.
Will your upper work with a Foxtrot Mike lower???
JESSE J on Aug 24, 2019
BEST ANSWER: I have mine on a Bushmaster lower. Should work on anything milspec or standard.
Will this upper work with a KE Arms glock style lower?
TonyL on Jun 1, 2019
BEST ANSWER: Yes iI have one on there it's functions perfectly

I have a multi cal ar15 lower. Will the promag ar15 magazine conversion work with this upper?
Ben N on Apr 9, 2019
BEST ANSWER: I installed this PSA GEN4 16" 9MM onto my LMT AR-15 lower and used conversion magazines and it has functioned flawlessly.
Is this upper compatible with your 9mm lowers?
Dennis B on Mar 22, 2019
BEST ANSWER: The website claims that their lowers will only work with their uppers. So I'm pretty sure that the uppers would be compatible with their lowers.
Will this upper work with this lower"PSA BETSY ROSS PX9 "I STAND-9" STRIPPED LOWER RECEIVER "? Thanks
SKU: 5161776-9
H N on Sep 15, 2019
Is the Bolt ramped for less wear and tear on the hammer?
Rafael C on Apr 22, 2019


4.8 / 5.0
18 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Excellent 9 mm upper
Excellent upper 0 failures I also use cast lead ammo and shots very accurately 120 gr tc lee mold with bullseye powder
August 23, 2019
1 month ago
Thank you! Great shipping time and well made.
August 9, 2019
5 months ago
Really a great bargain and i would highly recommend this upper
August 7, 2019
2 months ago
PSA does it again.
For the price, PSA cant be beat. The fit and finish is good. The rail is very light yet feels sturdy. Functioned perfect out of the box. I have bought several uppers and lowers from PSA and will continue to do so. Matter of fact, I currently have a KS47 lower waiting for an upper.
PSA PCC build
PSA PCC build
June 25, 2019
4 months ago
Worth the money and a ton of fun to shoot. Going thru more 9mm than ever!
Works great. Locktite the 2 screws for the ejector or it will get loose.
June 19, 2019
4 months ago
Awesome upper
This upper was for my first AR build and it worked flawlessly with a stripped lower kit also from PSA.
My PSA first build
My PSA first build
June 18, 2019
4 months ago
Fun gun.
Bought this upper and put it on a PSA 9mm Glock complete lower. Had an old ammo can full of all types of 9mm ammo,lead,fmj, hollow points old and new. Wow this thing worked with all types of ammo no issues. What a fun gun to shoot,very accurate if you like to shoot you need one of these. The wife and daughter love this gun. Have about 900 rounds through it so far, using Magpul mags not one issue. Love it
June 18, 2019
5 months ago
On a dad budget.
Great little upper on a budget! I use it with a regular AR15 spikes lower and Endomags and it works great!
June 18, 2019
5 months ago
No issues with it. Runs great!
June 16, 2019
4 months ago
Worth it!
Had some feeding issues at first. Smoothed out the feed ramp and a little bit into the barrel and it’s flawless now
June 4, 2019
5 months ago

Customers Who Viewed This Item Also Viewed