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CMMG, Inc PS90 5. 10.4in. Barrel
$324.95 $269.99 Save 17%
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Most Helpful Positive Review FNH PS90 Barrel
This was a great upgrade to my PS90 once I got my tax stamp back.Excelent product at a good price and fast shipping . Instalation was very easy and strait forward if you have basic armorer tools just be sure and use a piece of wooden dowel rod to push the old barrel out to keep the floating barrel springs in place
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Great conversion

by Dr Pepper1889, Verified Owner from GA, United States Written on April 22, 2025
Glad a manufacturer made this. It is not a hard install. Only issue is the ATF wait. This is second one I have bought and installed after approval. Makes the PS90 look like it is suppose to. Great product.
Pros:
  • None
Cons:
  • Have to submit a Form 1 to legally use it. Have to buy a specific type of Flash Hider
Would recommend: Yes
Was it helpful to you? Yes | No

A Great Option for your PS90 SBR Project

by Rob1547, Verified Owner from TX, United States Written on February 23, 2025
Great barrel option. I recently purchased my first PS90, after receiving my Form 1 SBR approval from the ATF (and laser engraving my firearm, etc.,), I purchased this CMMG Barrel from OpticsPlanet.

The CMMG 10.4" barrel is really a great option, albeit one of the only options, for those who want to convert their PS90 to an SBR.

I also appreciated that is has a fantastic and durable finish on it. I did the SBR swap myself (on the upper-limit of my comfort level but it came out great and I learned a lot in the process, got some new tools in the process, anyways....), you'll need a 15MM THIN-wrench for the rear bolt of this barrel (just like the FN factory one). I was impressed that the barrel really took the "manhandling" of holding it down in a vice while torque-wrenching down the muzzle device on it. The finish did not flake off or tarnish while I was pretty pretty hard on it, as required to torque it down. The rear nut looks identical to the FN factory one.

TLDR: A great option, while not "cheap", it's also not insanely expensive. It's also a nice quality barrel. CMMG puts this barrel goes through a SBN (Salt Bath Nitride) coating process during manufacturing, which is different than the FN cold-hammer forged process, but not "better or worse". Just different - Don't hesitate to buy this! Highly recommend.
Would recommend: Yes
Was it helpful to you? Yes | No

CMMG PS90 10.4” Barrel

by Jack Oneal, Verified Owner from AZ, United States Written on June 11, 2024
This is a perfect fit for SBRing my PS90. It made the process much easier the cutting my original barrel and having it rethread. The price offered by OP was much cheaper and readily available that getting it from the actual company.
Would recommend: Yes
Was it helpful to you? Yes | No

Perfect product

by EdC, Verified Owner from IN, United States Written on April 10, 2024
Perfect fit to SBR your ps90. Took me about 20 mins to replace the barrel.
Pros:
  • Perfect fit
Cons:
  • none so far
Would recommend: Yes
Was it helpful to you? Yes | No

Perfect product

by EdC, Verified Owner from IN, United States Written on April 3, 2024
This is the way to go when you want to SBR your ps90. Great price with fast shipping. Optics planet has always been a go to place for parts
Would recommend: Yes
Was it helpful to you? Yes | No

PS90 barrel

by Chris Holden, from TX, United States Written on January 25, 2023
Makes the gun fun and badass looking. Perfect fit. Installation was easy if you’re not keeping your old barrel. It gets tricky if you want to keep your stock barrel though. No other way to own this gun in my opinion
Would recommend: Yes
Was it helpful to you? Yes | No

PS80 SBR project

by JC, from SC, United States Written on April 27, 2018
Optics Planet has the Best prices around. Excellent barrel and Fast shipment. I’ve made several purchases and very pleased with the customer support sales team. They offer very good suggestions also. CMMG makes very good high quaility products.
Would recommend: Yes
Was it helpful to you? Yes | No

Awesome Barrel!

by TMHonfire, Verified Owner from TX, United States Written on March 12, 2018
If you are looking to SBR your FN PS90 to a P90 look, the CMMG 10.4 inch barrel is the one to get. I have shot everything form SB193 to SS190 5.7x28mm from it without issue. You will also need to order the CMMG FH or the thread adaptor to finish your SBR project of a PS90 to P90.
Pros:
  • cost
  • quaility
Cons:
  • None
Best Used for:
  • FN PS90
Would recommend: Yes
5 of 6 found the following review helpful.
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CMMG, Inc. brand barrel

by BBQ, Verified Owner from TX, United States Written on July 12, 2017
Nicely made barrel with the quality of the original FNH products. Hard to find barrel but is available for a good price at Opticsplanet.com. Finding a CMMG flash hider to be used with this barrel is a challenge. Opticplanet.com is able to order them at a good price.
Would recommend: Yes
Was it helpful to you? Yes | No

CMMG PS90 Barrel

by PS upgrade, from AL, United States Written on January 19, 2017
Well made barrel, best way to go to sbr a PS90. Can not install the barrel until the end of the year when stamp comes back. The barrel will require the CMMG muzzle break or CMMG thread adapter to use 1/2 x 28 muzzle device or suppressor.
Would recommend: Yes
Was it helpful to you? Yes | No
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