PSA 8.5" Pistol-length 5.56 NATO 1/7 Nitride Barrel and 7" 2A Armament M-Lok Rail - No BCG or CH - 516445166

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PSA 8.5" Pistol-length 5.56 NATO 1/7 Nitride Barrel and 7" 2A Armament M-Lok Rail - No BCG or CH - 516445166


Quick Overview

free shipping Free Shipping applies to this item only and not the entire order.

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.

SKU: 516445166
UPC: 516445166
MFR#: 516445166

Gas System: Pistol-length
Barrel Profile: A2 Style
Barrel Steel: Chrome Moly
Barrel Finish: Melonite
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 Style Flash Hider
Receiver Material: Forged 7075 T6
Receiver Type: M4
Hand guard Type: 7" 2A Armament M-Lok Rail
Bolt Carrier Group Included: No
Bolt Steel: N/A
Bolt Carrier Profile: N/A
Charging Handle included: No
Overall Length: 17"

Add To:

Barrel: Chambered in 5.56 NATO, with a 1:7 twist, M4 barrel extension, and a pistol gas system this barrel features a melonite finish for accuracy and durability. It is finished off with a 7" 2A Armament M-Lok rail, .750" diameter low profile gas block, and an A2 flash hider.

Upper: Forged 7075-T6 A3 AR upper is made to MIL-SPECS and hard coat anodized black for durability. Featuring machined T marks, and a mil-spec finish. These uppers are made for us right here in the USA by a mil-spec manufacturer.

Each upper is assembled to order with care, and test fired.

BCG & Charging Handle Not Included



SKU: 516445166
SKU 516445166
Brand Palmetto State Armory
Daily Deal No
Daily Deal Expires No
Youtube Video No
Free Shipping? Yes
SKU: 516445166

Questions and Answers

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Browse 3 questions Browse 3 questions and 7 answers
Can this be used with a standard carbine buffer spring and buffer?
Tom1365 on Apr 26, 2018
BEST ANSWER: This comes with a standard gas block. I would highly suggest you replace it with an adjustable as for me
it was quite over-gassed. I started with a standard spring and H buffer and it pretty much threw the brass
out at about 2 o'clock with a very harsh recoil. I installed an adjustable block with the same spring and buffer.
After tuning, it really helped the system function with brass at about 3:30 and much smoother recoil.
Will this cycle both 5.56 and 223?
Racerxmccoy on Apr 20, 2018
BEST ANSWER: Yes, I have run both through this upper with no problems.
Can this be shipped to California?
Loren F on Apr 20, 2018


4.9 / 5.0
7 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
Would highly recommend if you only need the barrel! Was the first part of my first gulf and I'm more than happy! The quality is great the look is amazing. Great purchase!
May 30, 2018
1 month ago
I love this upper! I paired it with a PSA lower build kit and put a PSA bolt carrier group in it and it shoots well.
May 25, 2018
1 month ago
favorite pistol upper
put this upper with psa lower with sbpdw stabilizing brace this upper shoots very accurate would buy again great product.
May 21, 2018
1 month ago
Pistol length upper
After buying a 16" rifle from PSA and loving it I wanted a shorty. Great price and shipped quickly. I'll buy the matching lower next time.
April 30, 2018
1 month ago
Great Midsize Pistol upper!
You usually have to choose between 7" or 10.5" barrels for a pistol build. The 8.5" comes in as the perfect compromise. All quality parts and a nice light weight hand guard. The only drawback for me was the standard gas block on this pistol barrel caused over gassing. I replaced it with an adjustable and got it running much smoother. Otherwise a great upper!
April 27, 2018
6 months ago
Awesome little upper
This little upper is pretty sweet! my first order from here i was very satisfied got a psa nib bcg and standard charging handle on an anderson lower and man it fits like a dream.... still havent fired so i cant speak on functionality as of right now but i can guarantee it will be near superior for a budget build.
September 26, 2017
Awesome upper. First pistol build.
I was a little worried about reliability but when combined with the MOE pistol LPK and Premium BCG from my PA-15 Premium carbine worked great No failures at all. LOVE!!!!
May 13, 2017

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