BLEM PSA Gen2 PA10 18" Midlength .308 WIN 1:10 Stainless Steel 15" M-lok Upper - with BCG and CH -516447164B

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BLEM PSA Gen2 PA10 18" Midlength .308 WIN 1:10 Stainless Steel 15" M-lok Upper - with BCG and CH -516447164B


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: 516447164B
UPC: 516447164B
MFR#: 516447164B

Gas System: Mid-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" M-Lok Free Float Rail 
Bolt Carrier Group Included: Yes
Charging Handle Included: Yes

**These uppers may have cosmetic blemishes that do not affect function. This may include, but is not limited to, forging marks under the finish, scratches, dings, slight variation in the finish color coat.


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, mid-length gas. Upper is paired with a Palmetto State Armory 15" 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.

  • 7075-T6 Forged aluminum receiver
  • 18" 416R Stainless Steel Barrel
  • 308 WIN Chamber
  • 1 in 10 twist rate
  • Mid-length Gas system
  • 15" free float M-Lok rail
  • low profile gas block
  • A2-style muzzle device
  • 5/8-24 muzzle thread
  • Nitride BCG & Charging handle

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 manufacturer’s parts in our products.

SKU: 516447164B
SKU 516447164B
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: 516447164B

Questions and Answers

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Browse 18 questions Browse 18 questions and 58 answers
I am s felon can I purchase the Blem PSA Gen 10 upper?
Kim b on Jun 12, 2018
BEST ANSWER: OK. Here is how you do this legally. Place your order, and pay with a credit card. Put my address, not yours, in the "ship to" column. Now, you have the thrill of buying this upper, but you are not putting yourself at risk. I promise to make good use of it, and I'd be happy to send you pictures. You're welcome!
Will you ship upper assembly’s to NYS?
Mrpylak on Jun 18, 2018
BEST ANSWER: Yes they do. I recently ordered an AR15 build kit from them shipped to my door. Make sure it is compliant when you finish your build!
Will this upper fit a polymer 80 .308 lower dpms style?
Marcus A on Jun 16, 2018
BEST ANSWER: Yes as long as lower is mil spec or tolerances are mil spec.
I have a regular 308 lower from Tennessee arms, this will fit it right?
Robert on May 3, 2018
BEST ANSWER: yes it will fit this is a regular upper just has a free float rail witch doesnt effect anything I assume you have a ar style lower .if it is a ar style 308 it will fit.
I have a dpms lower lr-308 will this upper fit?
Ron B on Jun 17, 2018
BEST ANSWER: you may have missed it in the description. the upper may technically fit other lowers but it isnt guaranteed to be a perfect fit unless it is a PSA lower. the upper is a dpms style so you should be good especially if the lower has an adjustment screw.
What is the inside diameter of the handguard?
Sageman on Jun 8, 2018
BEST ANSWER: I never got the gun. still looking for one .will buy in two piieces up and lower
It would be nice if there was some sort of matrix to show what's different between uppers with the same descriptions but different part numbers. (?)
Doug L on Dec 7, 2018
BEST ANSWER: They have slight differences , Like different barrel coating, material, makers, etc
Similar to the question asked previously, I have a 308 lower from primary weapons systems. I am wondering, will this upper will fit it? I understand that not all "AR-10s" are built to the same specs, but I like PSA products and would like to match this to my lower.
cream of wheat on Jun 15, 2018
BEST ANSWER: I have an Aero Precision 308 Upper and Lower, as well as a PSA GEN2 308 Upper and Lower. My PSA Upper does NOT fit my Aero Lower, but my Aero Upper DOES fit my PSA Lower. Hope this helps you.
Will this fit on a regular AR 15 lower?
Corey C on Jul 22, 2018
BEST ANSWER: No. The AR10 platform is larger than the AR15 platform. They aren't interchangeable.
Can you use 7.62 x 51mm safely with these uppers?
Cbass on Jan 26, 2019
BEST ANSWER: Commercial. 308 is loaded to higher pressure than 7.62 nato, so using the lower pressure cartridge, will not be an issue. I interchanged both on a regular basis with no I'll effects.
Is this compatible with the gen 2 pa10 complete lower? And will this fire military ammo with no problems?
terry b on Jul 31, 2018
BEST ANSWER: Yes it is compatible.. They are made to work together. I purchased the same set-up as you and im completly happy with it. The only issue I had with the blem upper was the the muzzle break on it was clocked a little off. I added a spacer I had from my .308 AK and it lined up perfectly. I believe the gen 2 lower also works with the gen 1 upper as well but has some cosmetic difference ie. lines not matching up.
Is this upper offered with a keymod hand guard ?
Nelson B on Feb 14, 2019
BEST ANSWER: These are blemish runs I’m fairly sure they won’t replace the guard unless you call and request it as a custom build you can find a key mod guard and install it after you verify the smooth operation of the upper and it will probably less expensive then a custom build plus you will have an extra guard.
Will this upper work with aftermarket charging handles?
Nicholas M on Nov 4, 2018
BEST ANSWER: Yes, I have the rainier arms charging handle In mine
Will this upper fit a smith and Wesson M&P 10 308 lower?
TonyL on May 31, 2019
BEST ANSWER: Sounds like there's alot more variables on AR10 platforms..get on a S&W community chat and ask them...
I just found your site courtesy of Hank Strange. I like your AR10 in .308. I would like to know if you manufacture a left handed version?
Kevin B on Dec 5, 2018
BEST ANSWER: You'll have a very hard time finding a left-handed AR style rifle. Fortunately, ARs are pretty usable for lefties.
Will this fit an M5 Aero Precision .308 lower?
Jr M on Jul 15, 2018
BEST ANSWER: hmmm, looks like they don't work together from what a couple of people have tried. they just dont line up right, so I would say No.
I live on long Island new York will your UPPER work with a lower made by a company called Darkstorm Industries?
Handle Bar 65 on Nov 19, 2018
Can you ship this to Maryland?
Aaron on Jul 27, 2018


4.8 / 5.0
65 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Great upper. Looks great too! I can't find the BLEM... My only complaint is my fault... I wish I had waited an extra day or so to buy it because the 20" with rifle length gas system came in stock for $10 more. Meh, such is life, amiright? Buy this thing if you can. It'll eat whatever you feed it and it'll reach out and touch whatever you point it at. Happy shootin!
July 30, 2019
3 months ago
PSA parts, products, and service
I have about 8-10 complete PSA rifles, all of which are composed of mostly “blemished” parts... I have never had a single malfunction or misaligned part out of all of my orders... some of the parts are mates to other manufactured parts and I have had no issues with calibers ranging from 9mm, 5.56, .300, and .308... this company offers an exceptional value at its cost and I will continue to use and recommend their products... shipping and customer service have been what is advertised, prompt and courteous in all cases...
July 28, 2019
3 months ago
Blemished ?
I think PSA just labels things blemished to sale it at even lower prices. I'm yet to receive a so called blemished anything from them that is actually blemished. Great products at unbelievable prices. Keep up the great work.
July 28, 2019
3 months ago
Got this a few weeks ago and then my lower last week. Never notice any "blemishes", it looked great to me. Went to the range and it shot like a dream. It ate everything I had, new, reman, even some Tula and NO hickups at all. Very impressed. Sighted in nicely on BUIs and with my scope it was easy as pie!! I like PIE!!
July 28, 2019
3 months ago
I have been very impressed with this upper. Very well made. It cycles many different weights and brands of ammo with no issues. I highly recommend palmetto State armory.
March 25, 2019
1 year ago
Great! Runs like a champ!
Runs great. Super small blem took 15 minutes to find it.
March 20, 2019
8 months ago
Great price
I don’t know where the blemish is but it perfect shoots great I couldn’t be happier
User submitted image
Added Feb 18, 2019
February 18, 2019
8 months ago
Happily Surprised
I held off writing a review until I had a chance to really put it through the paces. First off it shipped and arrived quickly. About a week from ordering it was on my porch. The blem I found was a very small "scratch" under the forward assist at the hole for the roll pin. Fit my Aero Gen II lower well. I gave it a good cleaning and re-oiled with a quality lube. It functioned well and locked back when I tested it with dummy rounds. I loaded some mild loads for initial testing. I very soon found that even with these very mild loads, I was getting pronounced ejector dimples on the brass.I found the ejector to be very hard to depress, much harder than any other AR-308 bolt I've tried. I put some penetrating oil on the ejector and used a spent shell case to repeatedly depress the ejector. After 30-40 times pressing it in, I felt it break free. I think there was a burr on the ejector that finally smoothed down because now it works perfectly. I assume this would have work itself out during break-in, but didn't want damaged brass..The rifling looks well cut and the crown is fine. The feed ramps were a little rough, but it feeds well. It locks back every time on an empty magazine, and the ejected brass only has minor marks. It took around 40 shots for the barrel to settle in and start grouping. It does not like to be perfectly clean! I used 150 grain Gold dot bullets and CFE-223 powder and without much load development, it's more than capable of 5/8"-3/4" groups at 100 yards, probably even a little smaller with more time developing a load. At about .5 grain under max of cfe-223 the 150 grain bullet was running right at 2750 from the 18" barrel. I'm very happy with the upper and would recommend it anyone looking for a decent upper that's easy on the wallet.
User submitted image
User submitted image
February 17, 2019
Better than expected
Upper arrived promptly. The blemish was very minor. Mated it to a BSA lower without any problems. Gun fired and cycled normally through 20 rounds on the range. It shot about one inch groups using 165 grain Hornady SST at 100 yards. I was sighting in a thermal so my experience may not reflect the full consistency/capability of the barrel. After one trip to the range I'm confident that if I don't hit what I'm shooting it wouldn't be the upper's fault.
December 23, 2018
1 year ago
Very satisfied, can find the blem
December 22, 2018
1 year ago

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