Barreled Upper Assemblies for AR-15

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PSA 7" Nitride 5.56 NATO 1/7 Nitride 6" Lightweight M-Lok Slick Side Upper - With BCG & CH - 5165448130


Quick Overview

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: 5165448130
UPC: 5165448130
MFR#: 5165447572
  • Barrel Length: 7"
  • Barrel Profile: Heavy
  • Gas System: Pistol-length
  • Barrel Steel: 4150V Chrome Moly Vanadium
  • Barrel Finish: Nitride
  • Chrome Lining: No
  • Muzzle Thread: 1/2-28
  • Chamber: 5.56 NATO 
  • Twist Rate: 1:7
  • Barrel Extension: M4
  • Diameter at Gas Block: .750
  • Gas Block Type: Low-profile
  • Muzzle Device: A2 Flash Hider
  • Receiver Material: Billet 6061-T6
  • Receiver Type: Slick Side
  • Hand guard Type: PSA 6" Lightweight M-Lok
  • Bolt Carrier Group Included: Yes
  • Bolt Steel: Carpenter 158
  • Bolt Carrier Profile: Full-auto
  • Charging Handle included: Yes

Add To:

Barrel:  7" 4150V Chrome Moly vanadium steel, nitride treated for accuracy and durability, and chambered in 5.56 NATO with a 1 in 7" twist. Pistol-length gas barrel is finished off with an anodized PSA 6" Lightweight  M-Lok Rail, a low profile gas block and an A2 Flash hider. 

Upper: Billet 6061-T6 slick side AR upper is hard coat anodized black for durability and made for us right here in the USA. 

Bolt: Full-auto profile bolt carrier group. Milspec Carpenter No. 158® steel bolt, Shot Peened, High pressure tested, Mag particle inspected, Gas Key Hardened to USGI Specifications, Fastened with Grade 8 screws, and Staked Per Mil-Spec. 8620 steel M-16 profile carrier is chrome lined and phosphate coated.

SKU: 5165448130
SKU 5165448130
Department Uppers
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 No
Free Shipping Qty No
SKU: 5165448130

Questions and Answers

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Browse 5 questions Browse 5 questions and 18 answers
Will these fit standard ar15 lowers?
Jr curtis on Apr 25, 2018
BEST ANSWER: Yes, this will fit any standard/Mil-spec AR-15 lower receiver.
My question is about shipping. Can i receive that item at home or at a ffl store?
carlos d on Apr 19, 2018
BEST ANSWER: Shipped to your home, ffl transfers are only needed if it includes the lower receiver. Also, you would need to provide an ffl address if the item required a transfer. Hope this helps.
Will this fit on an DPMS lower?
Rusty45 on Jun 28, 2019
BEST ANSWER: The barrel assembly will fit any standard AR-15 lower assembly. On a pistol lower it's great. On a rifle lower it creates a short barrel rifle which will require an NFA Stamp, before installing the barrel.
If I older just the upper receiver would it come to my house or to a fll??
Roderick on Apr 22, 2018
BEST ANSWER: You can ship this anywhere only the lower receiver has to go through a FFL
How do I post some pictures of my gun?
Kenneth R on Aug 11, 2018


4.9 / 5.0
26 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
This upper is awesome
Have put hundreds of rounds through it with no issues. It shoots straight and looks great
June 15, 2019
4 months ago
Built like a TANK....a little tank.
I bought this little guy along with a pistol lower (with the cheaper KAK pistol brace and buffer tube), and all I can say is WOW!!! I was very surprised that mine ate cheap steel cased Russian .223 ammo (Monarch) with no problems. That included both 55 grain hollow point and 62 grain FMJ. I won't make it a habit of using that ammo too much but it's nice to know that it works well.

The only thing I was a little disappointed by was the fact that I didn't look at the pictures carefully (my fault) and didn't realize that it didn't have a ejection port cover or a brass deflector. But as I don't plan on shooting left-handed, it's not a big deal. Likewise I don't plan on using this for hunting as it's primarily a home defense firearm. So the lack of a dust cover on the ejection port is not a big deal. Aside from that the Magpul 45 degree foregrip (VFG) didn't fit on well because the M-lock space is limited. . But again, not a big deal as I still got it on eventually.
Accuracy is quite decent at around 2 MOA with cheap ammo. However a few tight 3 round groups with 62 grain Monarch ammo (but with a couple of slight flyers on 4th and 5th rounds) made me believe that this little gun is capable of much better accuracy if got some higher quality ammo or used hand loads while also doing my part behind the trigger.

I was quite happy that the fireballs were not as big as I expected with the stock A2 birdcage muzzle device that it comes with. However, the recoil, especially on full power Federal 5.56 XM193 rounds, was a little bit stout. It felt very similar to my SKS rifle which is 7.62x39mm. Still however it is very manageable. Even when I fired it without letting the brace touch my shoulder (with the side of the buffer tube resting against my face), the recoil was very controllable and it didn't hurt my hand or wrist at all. I also used three different types of magazines and they all worked fine it. Best of all I had ZERO malfunctions without putting ANY oil on it before firing. I will of course, clean it and leave a light coat of oil on it, but I'm very happy that it's functioning smoothly with a variety of ammo of different powder load strengths and bullet weights/types. Fit and finish also is very nice and VASTLY better than another brand that I shall not name, but that sells polymer uppers and lowers at a similar price. I'm so glad that I went with PSA as it uses MUCH better quality materials and a better quality barrel and bolt-carrier group. So overall, I LOVE this little gun. It meets or exceeds my expectations so far. Now I just need to train on it as much as possible.
User submitted image
User submitted image
May 29, 2019
Slick pistol!
I’ve had this upper for a while and it’s the best pistol upper in 223/556 on the market. I did return it to PSA because my 22bcg wouldn’t fit. PSA pays for return shipping and has a lifetime warranty on everything they make. They’re my go to manufacture of ARs and I highly recommend them to everyone I know. I keep a 22 bcg in this upper as my wife’s home defense pistol w palmetto stamped black dog mags but I steal it every chance I get for some cheap, reliable plinking! I wish palmetto would offer these slick sides on some 300 blackout uppers...
Pew pew
Pew pew
May 14, 2019
1 year ago
Excellent AR pistol upper.
Love this set-up! The SBA3 brace is great! The brace came with a lower parts kit and it was still way less than the price of the brace alone! Can't beat that deal!
The 7" upper is very accurate and the recoil is about like a .45 acp. The only thing that mine had a problem with was steel case russian ammo, brass functioned perfectly.
Get one of these now! Or maybe 3 or 4.
7 " nitride upper on an Anderson lower, with the SBA3 brace.
Flip up BUS and a reflex sight.
7 " nitride upper on an Anderson lower, with the SBA3 brace. Flip up BUS and a reflex sight.
May 12, 2019
5 months ago
This upper literally gives you the most bang for your buck.
I highly recommend this upper. It is well made, reasonable priced and runs great. It's is loads of fun to shoot and very accurate considering the barrel length.
April 2, 2019
5 months ago
great buy
I recommend this upper to any build! It arrived in just a few days after ordering. In a nice box for protection. The upper fit perfectly on my lower. No complaints here!!!! Absolutely love the slick design.
October 21, 2018
Small and light, gets on target quick!
Great for getting through thick woods and works great on hogs.
September 4, 2018
1 year ago
Wasn't sure how I would like the slickside upper but WOW! Shot smooth and loved the reduced weight! The bolt was treated as well so you could tell it could take a beating from the elements since no dust cover. Very cool design and thought out. I will build another with this upper!
August 24, 2018
1 year ago
Bang Bang!
Great lil upper with a huge Bang and a Flamethrower also just sweeeeeeeeettttt!!!!!!!!
User submitted image
Added Aug 14, 2018
August 14, 2018
1 year ago
Amazing little A.R. pistol.
I mated this upper with a PSA EPT pistol lower and I absolutely love It! Accurate with both the mbus and the vortex red dot. Most important I think is the reliability. 1200 rounds and not 1 failure. My 3rd firearm from palmetto state and it wont be my last.
User submitted image
Added Jul 28, 2018
July 28, 2018
1 year ago

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