PSA 16" CHF Mid-length A2 5.56 NATO 1/7 13.5" Lightweight M-Lok Upper - Without BCG or CH - 5165450312

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PSA 16" CHF Mid-length A2 5.56 NATO 1/7 13.5" Lightweight M-Lok Upper - Without BCG or CH - 5165450312

In stock

Special Price $ 399.99

Regular Price: $ 609.99

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: 5165450312
UPC: 5165450312
MFR#: 5165450312


Barrel Length: 16"
Gas System: Mid-length
Barrel Profile: A2
Barrel Steel: Cold Hammer Forged Chrome Moly Vanadium
Barrel Finish: Phosphate
Chrome Lining: Extra thick
Muzzle Thread: 1/2-28
Chamber: .5.56 NATO
Twist Rate: 1:7
Barrel Extension: M4
Diameter at Gas Block: .750"
Gas Block Type: Low-profile
Muzzle Device: A2 Flash Hider
Receiver Material: Forged 7075 T6
Receiver Type: M4
Hand guard Type: PSA 13.5" Lightweight M-Lok Free Float Rail
Bolt Carrier Group Included: No
Bolt Steel: N/A
Bolt Carrier Profile: N/A
Charging Handle included: No

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Barrel: A proprietary blend of Hammer forged chrome molly vanadium made by FN 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 5.56 NATO, with a 1/7 twist, M4 barrel extension, and a mid-length gas system.   Barrel is High Pressure tested, and Magnetic Particle inspected, to ensure quality and dependability, and is finished off with a 13.5" PSA Lightweight M-Lok free float handguard, low profile gas block and A2 flash hider.

Upper: 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.

Handguard:  PSA 13.5" Lightweight M-Lok free float rail

This upper does not include a bolt carrier group or charging handle.

SKU: 5165450312
SKU 5165450312
Department Uppers
Brand Palmetto State Armory
Daily Deal No
Daily Deal Expires No
Unit Price No
Youtube Video No
Free Shipping? No
Free Shipping Qty Label No
Free Shipping Qty No
SKU: 5165450312

Questions and Answers

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Browse 14 questions Browse 14 questions and 22 answers
Does anyone know the weight of this?
GAdog on Dec 13, 2018
Is the gas block secured via a set screw and if so is the barrel dimpled?
Chris G on Dec 16, 2018
BEST ANSWER: No, but check out my review as to why this is a good thing. The factory workers don't have time to install the gas block perfectly level, so if they were to dimple them they'd be permanently altering the barrel based on a potentially canted gas-block install. Take a few minutes to verify your GB mount, and if it's level dimple it yourself. Otherwise if you're like me who received an upper with a canted GB install, do the refit than dimple.
What sort of MOA accuracy are you seeing from this upper?
Kory D on Mar 27, 2019
BEST ANSWER: About 3.5 MOA. But that is with 62 grain green tips, not known for their accuracy.
what keeps the handguard from slipping forward on the barrel nut?
tj j on Apr 7, 2019
BEST ANSWER: The barrel but has grooves and there are screws go in between preventing the rail from going forward. Hope this helped.
Is the barrel 16" EXCLUDING the flash hider? Thanks.
John P on Mar 15, 2019
BEST ANSWER: Yes, the barrel is 16” all by itself. The flashhider will make it longer than 16”.
Can a suppressor be fitted to this flash hider?
Mikael on Mar 1, 2019
BEST ANSWER: yes the griffin m4sd will fit it.
Are the cuts on the top of the handguard M-LOK or just lightening cuts?
Zee A on May 4, 2019
BEST ANSWER: The ones along the side and bottom are M-LOK, all the others are to lighten the weight and are not.
Can this upper be used on a Colt M4 expanse lower and use its carrier group?
Joe F on Apr 17, 2019
BEST ANSWER: Thats what mine is currently sitting on top of might want to check head space though. Not required but a good idea.
Can the gasblock be removed and a standard F-marked frontsight be installed ? Meaning does the barrel have the notches for the front sight pins ? I understand the rail will not allow this but I plan to use the barrel on a different set up and part out the rest for others .

Thanks MG
Metal God on Apr 15, 2019
BEST ANSWER: no notches on mine, received two this week.
I would like to know who manufactures this particular lightweight M-lok rail system?
Tj S on Oct 2, 2019
BEST ANSWER: PSA I believe , their logo is on it...
Is this really government profile, i.e. skinny until the gas block and then fat after?
christopher c on Apr 9, 2019
BEST ANSWER: Yes, it is A2 profile.
Is there a way to connect anything to the top rail section (it's not quite M-Lok but looks close)? looks like a dip for a scope. My concern is the rail gets pretty hot after rapid firing and it would be nice to know if you can install something on that section of the rail.
Bill V on May 20, 2019
BEST ANSWER: It appears to be M-Lok but it is not. I tried and tried and nothing fit on the upper cutouts.
Does this come with all hardware needed to assemble to a complete lower?
Sean-t on Nov 4, 2019
Weight of upper ? Is this in your experience, a good all purpose upper for the guy that can only afford one ? Has any one added adjustable gas block and have recommended type ?
Elias A on Apr 15, 2019


4.8 / 5.0
25 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
A R build
First AR build. Used all PSA parts. Works great and I’m very pleased.
October 13, 2019
3 months ago
best buy very good barrel no problems good company to purchase from
September 11, 2019
7 months ago
Great equipment. Great price. Fast delivery. No complaints. I will make future purchases.
August 29, 2019
4 months ago
Well constructed and good looking. The handguard is as good as any out there as far as functionality goes. A lot of people complain about no dimpling of the barrel for the gas block screws, but that's a minor gripe. Do it yourself and quit complaining. Accuracy has been outstanding, as well as reliability. You definitely get great product for the money!
August 25, 2019
9 months ago
Misaligned gas block
I love the materials and craftsmanship of this premium upper. The only downside is that the gas block is mis-algined (looks to be at the 11 O'clock position). They probably rushed the QA/QC on this one. I doubt this happened during shipping/handling because the packaging was more than enough.

I've read other have experienced this issue and it can be easily fixed by disassembling the upper and centering.
User submitted image
Added Jul 24, 2019
July 24, 2019
4 months ago
Response from Palmetto State Armory
We do apologize for that. Please contact Customer Service so we may resolve this issue.
July 24, 2019
Casey S
Great upper
I love this upper everything it said it was perfect fit and a great finish waiting to go to the range!
July 23, 2019
4 months ago
Very pleased with my upper, PSA is the $h!t
Very pleased with this upper so far, I only got about 500rnds through it. Shoots straight, works good. I put it on a PSA classic lower with a waffle stock, a premium PSA BCG, CMMG charging handle, a set of mbus sights,a fde Holosun from amazon, and a vicker's sling. (I still got to get a light) All for right near $750 AND it's got a CHF CL FN barrel! Get 'em while you can boys.

Liberty or Death, God Bless America, Don't Tread on Me!
Still needs a light
Still needs a light
July 22, 2019
7 months ago
Amazing Upper
The finish was fine to me, not anything spectacular or anything to complain about. The Handguard is very lightweight. Dings up easily but this upper is meant to be used. Upper ate Wolf Gold, Federal 223, and Wolf Steel case. Not one problem so far. Accuracy is fine for my purposes. My gas block has yet to come undone and I did Loctite it along with the Handguard screws. Have yet to clean it. Runs well with a Toolcraft DLC Bolt Carrier Group. My only complaint is I wish the Handguard top cutouts were M-Lok compatible. Highly Recommend and a great deal. Even better if you can get this Upper with the Geissele Rail.
July 17, 2019
5 months ago
Crazy accurate. FN CHF is awesome!
July 12, 2019
5 months ago
Helluva Deal
Very happy with this upper. Everything seemed sorted when it arrived, but I still put blue loctite on the handguard retaining screws. Over 800 rounds with no malfunctions. I definitely recommend the FN barrel due to durability, longevity and ease of cleaning.
Part of the go to range bag
When first assembled with Aero M4E1 lower
June 30, 2019
7 months ago