PSA Gen2 PA10 18" Midlength .308 WIN 1:10 Nitride 15" Lightweight M-Lok Upper with BCG and CH

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PSA Gen2 PA10 18" Midlength .308 WIN 1:10 Nitride 15" Lightweight M-Lok Upper with BCG and CH


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: 516447203
UPC: 516447203
MFR#: 516447203

Barrel Length: 18"
Gas System: Mid-length
Barrel Profile: A2 Style
Barrel Steel: Chrome-Moly Vanadium
Barrel Finish: Nitride
Chrome Lining: None
Muzzle Thread: 5/8-24
Chamber: 308 WIN
Twist Rate: 1:10
Barrel Extension: M4-style
Diameter at Gas Block: .750
Gas Block Type: Low-profile gas block
Muzzle Device: A2 Style Flash Hider
Receiver Material: Forged 7075 T6
Receiver Type: PA10
Handguard Type: PSA 15" Lightweight M-Lok Free Float Rail 
Bolt Carrier Group Included: Yes
Charging Handle Included: Yes

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Barrel: machined from 4150 steel, chambered in 308 WIN with a 1/10 twist, mid-length gas, and nitride treated for accuracy and durability.  Upper is paired with Palmetto State Armory's New 15" Lightweight M-Lok free-float rail, low profile gas block, and an A2-style muzzle device. 

Upper:  Precision machined from forged 7075-T6 aluminum, then Black anodize hardcoated to MIL-8625 Type 3 class 2.   

Bolt Carrier Group: 9310 steel bolt assembly, nitride treated for durability.  8620 carrier, nitride treated, with a nitride treated gas key properly staked with grade 8 fasteners.  Charging handle is also included.

The Gen2 PA10 receivers are functionally compatible with the Gen1 upper receivers, however we recommend matching Gen2 lowers to Gen2 uppers for best appearance.  There are external cosmetic differences when mixing Gen1 and Gen2 upper and lower receivers that some may not find appealing.  Gen1 lowers will be available in the future for those who want a cosmetic match. 

The AR10 platform does not enjoy a common design between manufacturers, like the AR15. As a result, there can and will be subtle differences in the parts kits of various manufacturers. Some parts, like the fire control group, are shared with the AR15 platform to preserve the options for upgrading. For best results, we recommend only using PSA PA10 parts with our uppers and lower receivers. We do not recommend using other manufacturers parts in our products.

SKU: 516447203
SKU 516447203
Department Uppers
Brand Palmetto State Armory
Daily Deal N/A
Daily Deal Expires N/A
Unit Price N/A
Youtube Video N/A
Free Shipping? No
Free Shipping Qty Label N/A
Free Shipping Qty N/A
SKU: 516447203

Questions and Answers

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Browse 7 questions Browse 7 questions and 11 answers
Will this upper ever come back in stock?
Thomas S on Jun 4, 2019
What is the weight difference between this and SKU: 516447477?
Ben C on Jan 12, 2019
Have a Gen1 and was curious as to the minimum acceptable accuracy for this with an 18" stainless barrel. Is there a grouping standard for 100, 200, & 300 yards? 1 MOA, 1.5 MOA?
Hammerhead on Jan 5, 2019
Are the barrels made in the USA?
John H on Dec 23, 2018
Can the flash hider be removed or is it fixed? Thank you for your time.
Umar A on Dec 25, 2018
BEST ANSWER: The flash hider can be removed. I took it off of mine and replaced with a VG6 brake, and it now shoots like a 5.56.
Will it work if i use a spikes tactical stripped lower with a all psa internal parts?
Luis C on Jul 4, 2019
BEST ANSWER: Hi Luis, i believe all parts are mill spec, just be aware that if ur using ar mode, the bolt release is different in 308. I have not had any issues with other parts, they all maches ar15 parts
Anyone know if this upper will fit an Aero Precision AR10 lower?
Justin on Jan 18, 2019
BEST ANSWER: it is may understanding that it will. I have never had an issue using other mil-spec uppers lowers interchangeably with other manufacturers. I use Anderson Uppers with PSA Lowers pretty often. However; I have not personally married an Aero Precision to a PSA part.


4.8 / 5.0
12 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Incredibly well made and at one helluva price
This was my first build, an AR10, and I wanted to do it right. So I bought the complete upper assembly from Palmetto State Armory and I gotta say, this is one of the smartest moves I ever made in regards to the quality of PSA’s upper assemblies. This thing is absolutely beautiful and I am VERY glad I did it. It came to my door with a heavy barrel, a sweet free-float M-lock hand guard, and the finish was absolutely spotless. It takes all of the guesswork out of headspace and timing, and the first time I took it to the range, I was shooting offhand groups of one to one and a half inches at 100 yards, right out of the box! Do yourself a favor- buy the upper and lower receivers from Palmetto State Armory. You won’t regret it.
User submitted image
Added Aug 1, 2019
August 1, 2019
8 months ago
Top notch!
Fit perfect to my PSA ar10 lower. Absolute joy to work with this company.
February 25, 2019
7 months ago
Excellent quality
Excellent quality and fast shipping. PSA never disappoints. Would've gave 5 stars but the bolt wont go all the way back and lock. I'm assuming this is because of the buffer tube being the wrong length. This is a problem with the lower which is also PSA but purchased separately.
PA10 with Vortex scope
PA10 with Vortex scope
January 28, 2019
Response from Palmetto State Armory
We do apologize for that. Since all of our parts and firearms are covered by our Unlimited Lifetime Warranty, if you have any issues arise from the craftsmanship of the product, we can either have select parts sent to you for you to replace, or we can have the item brought in, at no cost to you, so we can repair or replace the defective product. Please contact Customer Service so we may resolve this issue.
January 30, 2019
Casey S
Solid Upper
Solid Upper. Really like the M-LOK upper. 4 stars for some minor gripes. When the forward assist pin was driven in, looks like the punch got away from whoever was assembling the thing. There is some slight damage to the upper. The peel washer had some burrs on it that catch clothes and gun socks. The flash hider is not completely lined up with the gas tube. There is also a small gap between the upper and my Gen 2 lower. I’m pretty particular about things so this may not bother most people. I’m into this gun for about $650 with tax, etc. and I’m pretty pleased overall. Can’t speak to the accuracy yet as I haven’t gotten a chance to fire it yet.
User submitted image
Little sloppy with the punch.
January 9, 2019
8 months ago
Reason for my choice
This is a well made low cost choise for a high performance weapon.
December 25, 2018
1 year ago
Great performance from this upper. It is actually more accurate than an Anderson upper that I purchased that is 2" Longer and has a heavy fluted barrel. I also paid twice as much for the Anderson Upper.
December 13, 2018
1 year ago
Very pleased
I finally got to shoot this upper a couple days ago and couldn't be happier. It was found it to be precise and cycled flawlessly. This rifle is as accurate as I am. The upper is lightweight, lively and pointable.
With Primary Arms 3x Prism Scope and ADM quick detach scope mount.
With Primary Arms 3x Prism Scope and ADM quick detach scope mount.
October 18, 2018
Great rifle, great price!
Compares to $2500 rifle.
July 5, 2018
1 year ago
Great Rifle
Bought this upper and I love it. Had some issues with the extractor/ejector at first, but after lubing it up and putting about 20 rounds down range it works flawlessly. I put a Leupold VX-3 on it, but haven't been able to verify MOA yet as I don't have a bipod or shot from a rested position to stabilize the rifle yet. Would recommend to anyone looking for an AR10.
May 16, 2018
Appears to be a well-made upper.
So far, so good. Great feel to the material. Appears to be well-made. I am still waiting on the scope, but as with all my other PSA products, I am sure this one wont dissapoint.
Still need glass!!!
Still need glass!!!
April 24, 2018
1 year ago

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