PSA Gen2 PA-10 20" Rifle-Length .308 WIN 1:10 Stainless Steel 15" M-lok Upper with BCG and CH - 5165447551

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PSA Gen2 PA-10 20" Rifle-Length .308 WIN 1:10 Stainless Steel 15" M-lok Upper with BCG and CH - 5165447551


Quick Overview

SKU: 5165447551
UPC: 5165447551
MFR#: 5165447551

Barrel Length: 20"
Gas System: Rifle-length
Barrel Profile: A2 Style
Barrel Steel: 416R Stainless Steel
Barrel Finish: Stainless
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

Add To:

New and improved Palmetto State Armory PA10 Gen2 308 Upper is fully assembled and ready for your complete PA10 Gen2 Lower!

With streamlined styling and improved function, the new and improved PSA PA10 is here.  The Gen2 model offers an enhanced chamber and extraction, with a more modern appearance.  

Barrel: 416R Stainless Steel, chambered in 308 WIN with a 1/10 twist, rifle-length gas. Upper is paired with a Palmetto State Armory 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: 5165447551
SKU 5165447551
Brand Palmetto State Armory
Daily Deal No
Daily Deal Expires No
Youtube Video No
Free Shipping? Yes
SKU: 5165447551

Questions and Answers

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Browse 4 questions Browse 4 questions and 3 answers
I am going to be doing an 80% build and was curious if your uppers are compatible?
Kate S on Apr 12, 2018
BEST ANSWER: As there are no standard specifications for the AR-10 platform, as there are for AR-15, PSA recommends using PA-10 uppers with their lowers, and vice versa. That is the only way to guarantee functionality.
What is the weight for this complete upper assembly?
Guest on Apr 20, 2018
Is the barrel 20” and the compensator, making it 22” ? Or 20” all together?
Matthew H on Apr 23, 2018
BEST ANSWER: A Muzzle device is only counted toward barrel length if it is permanently attached. According to Federal government rules. To correctly measure measure from breach block face to end of barrel or muzzle device if permanently attached.
What kind of accuracy can I expect from this upper out of the box? Owners of the 18" are claiming 1-2 MOA. Is this one any better?
Hilge on May 11, 2018
BEST ANSWER: The accuracy is different with all ammunition but I found that Iike federal ammo at 150 gr.


4.4 / 5.0
14 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
Haven't shot it yet but the fit and quality are all typical Palmetto, outstanding. Planning on a set of MBUS temporarily until I decide which scope to use on it. As with the other items I have purchased from Palmetto, this should be a great firearm.
May 23, 2018
1 month ago
Outstanding product
Converted it to a 338 Federal the best deer rifle I have ever owned
May 22, 2018
1 month ago
Absolutely beautiful Ar10 upper
Great Ar-10 upper. Best one on the market for the value hands down
May 21, 2018
1 month ago
Dan Nelms PSA Gen2 PA-10 20" Rifle-Length .308 WIN
Accuracy in the 20 inch version is better than most bolt action rifes in similar barrel lengths. I totally enjoy in my custom built AR-10 hunting rifle.
May 16, 2018
1 month ago
Sharp looking upper!
I was a bit disappointed after having 'stalked' the PSA site for a month and never seeing a 22" .308 offered. They have the 18" which is just too short for my mind, the 20 and then the 24" which is just too long. (Why do I sound like Goldie Locks? Eww, this one is too short, this one is too long...)
I finally exhaled and 'settled' for the 20" and am not disappointed that I did. When I unpacked it, my disappointment dissipated rapidly. The 20 is definitely 'enough' rifle when I slap it on my lower, and I'm very sure that the 24 would have been too much and likely a bit front-heavy. (Ballistically, 22" is the optimum for .308 but the two inch difference isn't going to make much difference within my range limits.)
Rating the hardware, the finish is spot on (5), the upper fit is near perfect (5), the fit to my lower is good (3.5+). I haven't shot the combo yet but I don't see anything that indicates that it won't perform to at least my minimum acceptable level - and 'yes', I am a bit picky but no longer blond haired.
I would gladly buy this upper (and lower) again, especially at the price point.
Nice build for a great price! (forgive the orange tape markers on the rings)
Nice build for a great price! (forgive the orange tape markers on the rings)
May 15, 2018
I love my 20” heavy barreled upper. This is now one of my favorite rifles. The hand guard is a bit thin so I switched it out with a larger diameter hand guard that I purchased from black rain. There’s absolutely nothing wrong with the way it came it’s just a personal preference because I have large hands. I would love to upload a photo but you can understand why I won’t. For anyone “thinking” to purchase this you should definitely do it. Thanks per usual PSA you guys are awesome.
May 12, 2018
1 month ago
My favorite rifle by far!
I purchased this upper and took it out of the box put it directly on my PSA lower. The fit was great. Rifle ran flawless all day! This is my favorite rifle by far! PSA and there people were great for me. They have got a customer for life here!
May 12, 2018
I got what I paid for. There's a reason they're as cheap as they are.
Has tooling marks ask the way down the stainless barrel little disappointed but you get what you pay for. No gouging but vey visible scratching
May 10, 2018
1 month ago
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.
May 10, 2018
Casey S
PSA PA10 upper 20 inch bbl
Bought both Upper and lower PSA PA10 receiver, at different time when advertised on sale. Got a AR10 rifle for less than 1000$ that would have normally cost me 1500$. Bought magpul mags from another source as PSA didn't have them in stock. Took it to the desert this past weekend and shot the hell out of it, worked flawlessly, no jambs or stoppages. I'm impressed.
May 5, 2018
1 month ago
Accurate. Good quality
Accurate. Very happy with design. Price was cut by $50 shortly after purchase. Would recommend to others
May 3, 2018
2 months ago

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