PSA 20" Rifle Length 1/7 Nitride  15" Lightweight M-lok Upper - With BCG & CH

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PSA 20" Rifle Length 1/7 Nitride 15" Lightweight M-lok Upper - With BCG & CH

In stock

Special Price $ 319.99

Regular Price: $ 509.99

Quick Overview

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: 5165448519
UPC: 5165448519
MFR#: 516445155

PSA 20" Rifle Length 1/7 Nitride 15" Lightweight M-lok Upper - With BCG & CH

Barrel Length: 20"
Gas System: Rifle Length
Barrel Profile: A2 Style
Barrel Steel: 4150V Chrome Moly
Barrel Finish: Nitride
Chrome Lining: None
Muzzle Thread: 1/2-28
Chamber: 5.56 NATO
Twist Rate: 1 in 7"
Barrel Extension: M4
Diameter at Gas Block: .750"
Gas Block Type: Low-profile
Muzzle Device: A2 Flash Hider
Receiver Material: Forged 7075 T6
Receiver Type: M4
Handguard Type: PSA 15" lightweight M-Lok rail
Bolt Carrier Group Included: Yes
Bolt Steel: Carpenter 158
Bolt Carrier Profile: Full-Auto
Charging Handle Included: Yes
Overall Length: 32"
Weight as Configured: 4 lbs

Add To:

Barrel: 20" Chrome-moly barrel steel chambered in 5.56 NATO, with a 1:7 twist, M4 barrel extension, and a rifle-length gas system. The A2-style profile barrel is finished with nitirde finish for durability. Barrel is finished off with an .750" diameter low-profile gas block, PSA 15" Lightweight M-Lok free float rail, and an A2 flash hider.

Upper: Forged 7075-T6 A3 AR upper is hard coat anodized black for durability. Featuring M4 feedramp cuts, T-marks, these upper upper receivers are made for us right here in the USA.

Bolt Carrier Group: For AR15 and M16 rifles and carbines. Bolt is made of shot-peened, Mil-spec Carpenter 158® steel. Gas key is secured with grade 8 fasteners and staked. Bolt carrier is parkerized outside and chrome lined inside. Includes Charging Handle.

SKU: 5165448519
SKU 5165448519
Department Uppers
Brand Palmetto State Armory
Daily Deal No
Daily Deal Expires No
Unit Price No
Youtube Video No
Free Shipping? No
Free Shipping Qty Label No
Free Shipping Qty No
SKU: 5165448519

Questions and Answers

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Browse 15 questions Browse 15 questions and 37 answers
What is the barrel profile (govt, pencil, heavy...)?
ed j on Jun 7, 2018
BEST ANSWER: A2-style profile barrel. Google search "A2 barrel profile" then select "Images". You will find a wealth of information from many different sources.
PSA 20'' Rifle Length 5.56 1/7 Melonite A2 Barrel
PSA 20'' Rifle Length 5.56 1/7 Melonite A2 Barrel
Can this be offered without BCG and charging handle?
Paul N on Jun 14, 2018
BEST ANSWER: You could always purchase the barrel and use components of your choice to complete the upper.
PSA 20'' Rifle Length 5.56 1/7 Melonite A2 Barrel
PSA 20'' Rifle Length 5.56 1/7 Melonite A2 Barrel
Does this come in a stainless barrel version?
James H on Jul 13, 2018
Is this handgrip the same diameter as the one on my 48220?
curtis on Jun 1, 2018
Does this Upper come with a sling swivel?
Tom469 on Aug 5, 2019
BEST ANSWER: No, but it has quick release cups into which you can install swivels
Can I use 223 on this 5.56 upper ?
Pedro E on Apr 19, 2019
BEST ANSWER: yes. anything marked 5.56 nato can also safely fire .223 rem
Will this upper fit my Andersen lower?
Kevern C on Apr 15, 2019
BEST ANSWER: Assuming you have the same Anderson lower as a million other people (myself included)....yes. This dropped right on to several ar15 lowers I tried, with no issues.
Can I upgrade the flash hider after purchase?
Juan E on Sep 15, 2019
BEST ANSWER: If you have the right tools, then yes or any competent gunsmith can
Pretty new to customizing my rifle so my question is will this fit and work properly on my armalite 15?
Tom_39 on Aug 29, 2019

It may work on and Armalite AR15, but we can only guarantee that it will work on our PSA PA15 lower receivers.

Best Regards,
PSA Customer Service
Is this upper completely ready to throw on a PSA complete lower and use?
O'Boyle on Apr 20, 2019
BEST ANSWER: Other than sights yes it is ready
Will this fit an Olympic Arms lower?
Nolan S on Jul 22, 2019
BEST ANSWER: It will fit on any lower that is machined as an AR-15, M-16 lower.
Will this work correctly on carbine lower?
Jim M on May 1, 2019
BEST ANSWER: Yes, that's what I mounted mine on.
Will this assembly fit on a Smith & Wesson M&P Sport 2 .223/5.56?
Tad J on Apr 26, 2019
Would this fit a lower from BCI Defense??
Justin T on Apr 22, 2019
BEST ANSWER: Is the BCI a standard, mil-spec patterned lower?? If yes, then Yes...
I have an 80% lower that is not from PSA and yet to be completed, will this only work with 80% from PSA?
kenneth C on Sep 6, 2019


4.6 / 5.0
10 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Quality PSA Rifle Upper
Alpha Company, One Shepherd Leadership Institute purchased 4 of these PSA Rifle Length Nitride M-LOK uppers along with the PSA Rifle Complete Lower in the summer of 2017. We've issued them to our Warriors in force-on-force training. They worked so brilliantly, that we've since converted them into Light Support Weapons (LSW) with binary triggers, ACOG optics, and Atlas BT-10 bipods. These rifles perform!
ACO Rifles - Later converted to Light Support Weapons! Excellent.
ACO Rifles - Later converted to Light Support Weapons! Excellent.
August 23, 2019
Another quality upper from PSA
I bought this upper last month and mounted it to an Aero Precision lower, about 500 rounds through it at anywhere from 100-350 yards, consistent 1-1/2' groups without a single misfire or FTE. Runs through brass like a hot knife through butter. Dont think about it just buy it.
April 15, 2019
6 months ago
Let's see how long this holds up with practical shooting and proper care
Seems to be of same or similar quality to any other "mil-spec" AR platform. But for a better price. Please be patient with these guys. It will take awhile to get your parts. This upper works very well with Ultradyne C4 Dynamount front sight & comp
February 4, 2019
9 months ago
great upper at a good price
I received my 20 in upper assembly and it looks bad ass and shoots even better. It is the most accurate gun that I own. Love it!
January 20, 2019
9 months ago
It might be OK...
Haven't fired it yet. I've been busy. Sue me.

I'll say this though, I'm not very much impressed with PSA's quality control. It shipped quickly, but upon inspection I found the gas tube was not pinned to the gas block. I received the pin several weeks later and attached the gas tube to the gas block myself. This is something I should not have had to do.

The free-floating aluminum hand-guard is nice, but other than torquing the bejeezus out of the two set screws, there is nothing to keep the hand-guard from rotating on the barrel extension/upper.

One of the two QD holes on the hand-guard is over-milled or otherwise out of spec, and won't securely hold a well-made Magpul QD sling swivel.

I attached this upper to a Rock River lower. I added a Vortex red dot (for now), a Harris bipod, and a GI web sling.

It looks cool. We'll see how it performs.
My DMR.  Maybe.
My DMR. Maybe.
January 18, 2019
10 months ago
Works and looks great. I have run. A few hundred rounds through it and it’s accuracy is on point.
August 1, 2018
1 year ago
Great product fits great in lower
User submitted image
Added Jul 29, 2018
July 29, 2018
1 year ago
Very please with the look and feel, well balanced.
Anderson lower, magpul accessories, Bushnell optics.
Anderson lower, magpul accessories, Bushnell optics.
July 21, 2018
1 year ago
Good stuff!
Great product for the price very accurate.
User submitted image
Added Jul 4, 2018
July 4, 2018
1 year ago
Good Upper
Only 40 rounds down range, to dial in the scope, and the last 7-8 went wherever I wanted them to. MOA-Sub MOA. We'll see how this holds up (why only 4 stars) but it sure is starting out in the right direction. No issues whatsoever pinning it to a major manufacturer's lower, fit like a glove. Ya know what they say, it's 90% Indian and 10% arrow. . . . this upper is just fine.
July 1, 2018
1 year ago

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