PSA 16" Mid-length Freedom Stainless Steel 1/7 Dissipator - Without BCG or CH - 43633

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PSA 16" Mid-length Freedom Stainless Steel 1/7 Dissipator - Without BCG or CH - 43633


Quick Overview

SKU: 43633
UPC: 43633
MFR#: 43633

16" Barrel Length
.750" Gas Block Diameter
Mid-length Gas System
416 Stainless Steel Barrel
5.56mm NATO Chamber
1 in 7" Twist Rate
M4 Feed ramps
A2 Flash Hider
7075 Forged Upper Receiver

No BCG or Charging handle

SKU: 43633

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Once upon a time, a "dissipator" AR was created by taking a 20" rifle-length gas system upper and cutting the barrel down to 16".  This allowed the shooter to keep the long sight radius of a rifle for accuracy, but keep the carbine length barrel for maneuverability.  The proximity of the gas port to the muzzle, however, played havoc with timing and made reliability a hit or miss proposition.   Advances in AR technology  have produced reliable carbine and mid-length gas systems, that can be hidden using low-profile gas blocks.  This allows for a front sight base to be pinned in the rifle position for the longer sight radius without the worry of the unorthodox gas port location affecting operation.   We use the term "mock" to differentiate our dissipator from a cut-down rifle length version.  

Barrel416 Stainless steel. Chambered in 5.56 NATO, with a 1/7 twist, M4 barrel extension, and a mid-length gas system.  Barrel is  is finished off with a classic rifle-length handguard,  F-Marked gas sight base, and 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 and Charging handle are not included.


SKU: 43633
SKU 43633
Brand Palmetto State Armory
Daily Deal N/A
Daily Deal Expires N/A
Youtube Video N/A
Free Shipping? N/A
SKU: 43633

Questions and Answers

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Browse 2 questions Browse 2 questions and 2 answers
Any way I can get this upper with the A1 handguards kiks the gentlemens in the gallery?
Johnny P on May 1, 2018
BEST ANSWER: You'll have to buy it separate. I bought I Leaper's rifle length slim rail and it's awesome.
can i buy item without the hand guards?
josie on Apr 20, 2018
BEST ANSWER: At this time, PSA does not offer this set up without the handguards. However, it is possible to purchase the individual parts and build one the way you want it.


4.9 / 5.0
46 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
I like it
I've had this upper for a long while. It functions great. I recommend it.
User submitted image
Added Jul 18, 2018
July 18, 2018
Excellent product and worth it at twice the price!
Bought this barreled upper on sale a couple months ago. It’s paired with an Aero Precision lower w/PSA lower kit. Fit is spot on, very tight, no rattle. Was finally able to fire it today and it performed flawlessly. Out performed other barreled uppers I’ve used that cost 2-3 times more. Couldn’t be happier. I will go with PSA again on my next build, .224 Valkyrie 20” rifle. PSA flat gets after it!
User submitted image
Added Jul 4, 2018
July 5, 2018
Perfect match for my Ruger AR-556 Lower/also fits great on my Spike's tactical lower
Looks and feels good, great workmanship and a very clean look
Rugger AR-556 lower
Rugger AR-556 lower
June 4, 2018
Price was right
Overall finish was good. Cant beat it for the price.
May 1, 2018
5 months ago
Well built, really like longer sigh radius. well balanced and easy to handle.
April 30, 2018
5 months ago
Love at first sight!
Love it! Exceeds all expectations I had.
April 30, 2018
5 months ago
good deal on this upper
Makes a nice retro version
April 27, 2018
5 months ago
Great product (like all PSA products). Very accurate, running a carry handle rear sight on Anderson lower.
April 24, 2018
5 months ago
No Complaints
Mounted on a RRA Lower with a NM Two Stage Trigger. Upper Shot Flawlessly and very Accurate right out of the Box all Ammo that I tried shot fine. I just ordered my 3rd PSA Upper.
October 13, 2017
Always wanted a Dissipator
Saw this on sale and had to have one.

I was really surprised by the quality of this upper when it arrived.

$199 with a stainless barrel and MOE hand guard is hard to beat!

Very quick shipping too.

Will definitely be in the lookout for more daily deals!
June 24, 2017

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