PSA CHF 16'' 5.56 NATO 1:7 M4A1 Profile Upper Without BCG or Charging Handle

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PSA CHF 16'' 5.56 NATO 1:7 M4A1 Profile Upper Without BCG or Charging Handle


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: 29087
UPC: 810022020524

16" Barrel length
"Machine Gun Steel" barrel
5.56 Nato Chamber
1 in 7" twist rate
Extra-thick chrome-lined bore
M4 Feed Ramps
F-Marked Front sight post
A2 Flash Hider
Sling Loop
Carbine Hand Guards w/ heat shields
Forged upper receiver

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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 required 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 carbine-length gas system.   The M4A1 profile barrel is Mil-spec phosphate coated, High Pressure tested and Magnetic Particle inspected.  The barrel is finished off with an F-marked front sight post with sling swivel, standard handguards, and an A2 flash hider.

Upper: Forged 7075-T6 A3 AR upper is hard coat anodized black for durability. Featuring T-marks, these upper receivers are made for us right here in the USA.

Does not include bolt carrier group or charging handle.

SKU: 29087
SKU 29087
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: 29087

Questions and Answers

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Browse 5 questions Browse 5 questions and 9 answers
Is it larger dia than a standard m4 under the handguards?
Rick H on Feb 27, 2019
BEST ANSWER: If it’s truly the M4A1 profile then yes. Hence why I rolled the dice and ordered one of these specifically for that “socom” profile barrel. Not a fan of the standard M4 profile.
Palmetto a m4a1 pin and welded please?
Juan B on Apr 20, 2019
BEST ANSWER: This is 16 inch barreled upper, it is legal so no need to be pinned/welded.
Is the profile of this barrel heavier under the hand guards as it should be if it’s a real M4A1 profile???
Brendan F on Mar 20, 2019
Hi, FN stamped? Thanks
Marco on Mar 13, 2019
Does it have the m203 cutout under the hand guard?
Juan B on Apr 20, 2019
BEST ANSWER: Real M4A1 SOCOM barrels have flats milled into the side of the barrel beneath the handguards, in addition to the traditional step cut in front of the FSB. He's asking if this barrel has these flats like a real Mil barrel would.


4.6 / 5.0
5 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Excellent CS
The upper came with FN rollmarks and Anchor Harvey forge mark (looks like a "A"), good enough. Yet the top T marks are missing, not as advertised though those T marks are not that important.
Well, since I'm a perfectionist, I still contacted CS for repair, -- they really did good and quick job, send me return shipping label and RMA number. When the repaired upper came back to me in a week, it is still the FN rollmarked barrel, but with Brass Aluminum Forging Enterprises forge mark (looks like a square, which is common on colt upper), this time, a nice bunch of T marks show on the top.
Can't be happier.
June 15, 2019
Cant be beat top quality
May 30, 2019
4 months ago
Best bang for the buck out there.
These are my go to uppers. Cold Hammer forged, FN made with the M4A1 profile. Without the ridiculous price tag. Have 2 of these in the 14.7 and 16” flavors. Never have had issues with any of them.
April 27, 2019
5 months ago
Great Barrel, Receiver Not So Much
I was happy to find that this is actually an FN marked M4A1 barrel. My only issue is the upper receiver is not T marked or marked M4. I can't understand why they would leave these details out. This is supposed to be one of their "premium" uppers.
March 27, 2019
5 months ago
Impressive quality
With this I added a NiB m16 bcg and upgraded my buffer to a 3.4 oz. I have put 700 steel cased tula and wolf 55s&62s through it with not one problem plus 500 brass 62s also same outcome. Did some quick mag dumps as fast as I could with no hang ups either. You just can't beat the quality or price of this for getting the best in an AR upper let alone the barell is superb. Shot 30 rnd slow fire with open irons from 75 yds and got all (I think-One huge hole) within 1.5"...this may be over kill for what a regular civi may need but for tge price why not?
Semper Fi
July 6, 2015

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