ar-15 barreled upper assemblies for sale

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PSA 8" CHF Pistol-Length 300AAC Blackout 1/8 7" Lightweight M-Lok Upper - No BCG or CH - 5165450318


Quick Overview

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.

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: 5165450318
UPC: 5165450318
MFR#: 51654450318

Barrel Length: 8"
Gas System: Pistol-Length
Barrel Profile: Heavy
Barrel Steel: Cold Hammer Forged Chrome Moly Vanadium
Barrel Finish: Phosphate
Chrome Lining: Yes, bore and chamber
Muzzle Thread: 5/8-24
Chamber: 300AAC Blackout
Twist Rate: 1:8
Barrel Extension: M4
Diameter at Gas Block: .750
Gas Block Type: .750 Low Profile 
Muzzle Device: A2 Flash Hider
Receiver Material: Forged 7075 T6
Receiver Type: M4
Handguard Type: PSA 7" Lightweight M-Lok Rail
Bolt Carrier Group Included: No
Bolt Steel: N/A
Bolt Carrier Profile: N/A
Charging Handle Included: No

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Barrel: Barrel is made for Palmetto State Armory by FN Manufacturing using their proprietary blend of hammer forged chrome molly vanadium that is referred to as "Machine Gun Steel" by virtue of its use in FN's M249 and M240 weapons. The hammer forging process work hardens the steel, making it more durable. In addition, the chrome process for the bore allows for a lining almost twice as thick as a standard M16 for enhanced durability. Chambered in 300AAC Blackout, with a 1:8 twist, M4 barrel extension with extended feed ramps, and a pistol-length gas system. This barrel is Mil-spec phosphate coated, and MPI/HPT tested. The upper is finished off with a  .750" low profile gas block, Palmetto State Armory 7" Lightweight Free Float Rail, and an A2 flash hider.

Upper: Forged 7075-T6 A3 AR upper is made to MIL-SPECS and hard coat anodized black for durability.  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.

**Upper Does Not Include BCG Or Charging Handle

SKU: 5165450318
SKU 5165450318
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: 5165450318

Questions and Answers

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Browse 17 questions Browse 17 questions and 24 answers
Would there be anyway to get this in a 1:7?
Eddie N on Jan 12, 2019
BEST ANSWER: No! This CHF is from FNH and it is 1:8
What is the overall length? END TO END? Length from the very end of the brace to the end of the barrel extension. This is a buy or no buy question.
Bill H on Jan 27, 2019
BEST ANSWER: This is only an upper...the total length depends on a number of factors.
What is the weight of this upper?
Mike609 on Jan 10, 2019
What would it take to suppress it besides owning a suppressor?
Jonathan H on Feb 3, 2019
BEST ANSWER: Take OFF the Flash Hider and install a Suppressor, You just have to figure out IF you want Direct thread ON or the Quick Attach/Detach style.

Can PSA ship this with a 9 inch handguard and the fluted flashcan installed and I pay the difference?
Nicholas B on May 3, 2019
Can you use ar15 rifle lower with this pistol upper?
willmumford on Dec 15, 2018
BEST ANSWER: Yes but it's technically making it a sbr. All I'm saying is enjoy your 2nd ammendment brother ;)
Is the bolt the same as the 5.56? I'm new to the 300bo
Todd B on Dec 13, 2018
BEST ANSWER: Yes it is the same.
Is it possible to swap the mlok with a DD 9" Omega rail ?
Forty on Mar 16, 2019
BEST ANSWER: Sure it’s possible but why go to all that trouble? Just start your build with the parts and components you want a put the DD rail on that. A custom build from the ground up!
Will this fit on my Springfield saint AR Pistol 556 ?
terry w on Jan 16, 2019
Does anyone know if the FN chf barrels are dimpled? I know the regular nitrided and phosphate and barrels are not. I'm planning to convert this to a piston system but need to know if I should buy a dimple jig.
James W on Mar 11, 2019
BEST ANSWER: Didn’t have the gas block off so I can’t tell you BUT this runs flawless suppressed the way it is top shelf piece
what BCG & Charging Handle would be best match for this upper? looking for high quality, good match. i am aware that it is mil-spec
lon j on Mar 23, 2019
Do you have to shoot subsonic ammo with a barrel this short or is regular .300 BO ammo fine?
Bryan H on Feb 24, 2019
What is the overall length of this from one end to the other?
Jason H on Jan 9, 2019
Purchased in January and finally got around to putting the pistol together. Are your barrels stamped CHF? Mine is not, which is unusual for a PSA barrel...
Steve on May 27, 2019
BEST ANSWER: The Lazer etching should be right in front of the gas block on pistol barrels. My rifle is etched out towards the flash hider.
It is hard to see the hand guard hides it!
Is the gas block pinned or set screw?
Wayne on May 23, 2019
BEST ANSWER: Gas block is held in place with two set screws I will add this is a top shelf upper I could not be happier with it
Is the A2 flash hider pinned and welded or can it be removed?
jimmyboy on Dec 13, 2018
BEST ANSWER: Negative, the Upper is designed for either a short barreled application or Pistol build, there is therefore no reason to pin and weld the flash hider, because it would not meet federal regulations to meet overall length for a rifle/carbine build.
Will this upper fit on db15 pistol? I have a 10.5 on it now, what will I have to change to run the 8.5 on it?
Cary W on Feb 10, 2019
BEST ANSWER: This upper will fit standard mil-spec lower receiver. You should be able to pin it right up, provided you have a mil-spec lower.


4.6 / 5.0
17 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
8.5" CHF 300 AAC upper
Awesome..... Will get even better when my can gets out on parole.... 😃
September 22, 2019
9 months ago
Haven't put a round through it yet.
Looks great! Can't tell you how it'll shoot. I'm still waiting on my tax stamp. I'll come back if I remember to do so and update this review.
August 9, 2019
5 months ago
Well worth it
A well built quality product at a fair price. Buy it you will not regret it.
June 28, 2019
8 months ago
Solid upper, very reliable so far (1000 rounds)
Very solid upper. Impressed with its accuracy and reliability so far feeding it supers and subs through a suppressor. You can’t beat the value and performance PSA brings to the table with their CHF uppers.
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Added Jun 16, 2019
June 16, 2019
7 months ago
Solid 300 Blackout Pistol
Although I would have liked the gas block to have been pinned, it was simple to send it off to have this done. This prevents the block from premature failure. The upper has been reliable with every type of ammunition I have shot in it... from "Hot Super's to some very soft Subsonic's... Looking forward to seeing how well it will function with a can...
May 14, 2019
8 months ago
Ran about 300 rounds through it at the range a couple days ago. IT RAN FLAWLESSLY. Looking forward to building a 10.5 inch 300
May 8, 2019
8 months ago
Works but needs room for improvement.
I like the barrel and handguard, but shooting it is a different story. After one mag at the range, I noticed that my hand on the hanguard would turn black. My handguard gets covered in carbon as well. This all happens after 1 mag of use. I know a little carbon is to be expected, but it's almost like a camo pattern after use. This has seen 4 different range trips and gets cleaned every trip. And it still leaves my hand black and now the hanguard is permanently stained. I have used Hornady, s&b, and American Eagle and the same thing happens every time.

I have over 600 rounds through this and works flawlessly. However, my hand being black and a handguard being stained after use, makes me question how reliable this will be over time. But it has not had one malfunction yet.
April 27, 2019
FN cold hammer forged barrel
I use FN barrels in every gun I make and I know from that point I will not be disappointed. I didn't care for the hand guard that much from the pics and planned on changing it out when I received it. But when I saw it in person it looks much better and I'm going to save the money and stick with it. This is a great deal for anyone who wants the best there is for a reasonable price in the 300 blk round. This paired with the maxim defense brace is just nasty and I don't regret the build one bit.
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April 8, 2019
So far so good.
Upper is awesome with the FN barrel. I have shot both American eagle 150gr supers and Remington 220gr subs with it and have experienced no malfunctions. The barrel alone is worth the extra money. I have done quite a bit of work to my pistol build including installing a strike rail, odin works adjustable gas block, a Foxtrot-Mike blast/Concussion diffuser, and a Radiant CH. So far its just been a great time shooting it...
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March 26, 2019
9 months ago
Awesome upper. CHF goodness.
March 2, 2019
10 months ago