Rex Silentium GunFighter Pistol Caliber Muzzle Brake

Rex Silentium GunFighter Pistol Caliber Muzzle Brake

Product Code:
Calculated at Checkout
$59.50 $50.58

MPN: GF9 / GF40 / GF45


  • Compatible with Stormlake, Lonewolf and other threaded pistol barrels
  • Low-profile - does not obstruct sight alignment
  • Small and compact yet highly effective
  • No dust printing shooting from prone position
  • Built for pistol caliber carbines and pistols
  • Full-auto rated
  • Designed and made in the U.S.A.
  • Integral lock nut included


  • Caliber: 9mm / .40 cal. (or 10mm) / .45 cal.
  • Material: Hardened steel
  • Finish: Mil-Spec Black
  • Weight (with Muzzle Lock Nut):
    • 9mm: 3.35 oz.
    • .40 cal.: 3.11 oz.
    • .45 cal.: 2.96 oz.
  • Length: 1.89"
  • Width: 1.15"
  • Height: 0.81
  • Lock Nut Inner Diameter:
    • 9mm: 0.51"
    • .40 cal.: 0.58"
    • .45 cal.: 0.58"
  • Thread:
    • 9mm: 1/2"-28
    • .40 cal.: 9/16"-24
    • .45 cal.: .578"-28


  • 9mm / .40S&W (or 10mm) / .45 cal. barrels

*Please make sure the barrel outer diameter is smaller than the lock nut inner diameter.

*The barrel must have a noticeable step where the threads end on your barrel. The extra thread allows the included Integral Nut to sit up against the wall/step, so the main muzzle device can have something to thread onto and secure tightly in place.


  • 1x GunFighter Pistol Muzzle Brake
  • 1x Muzzle Lock Nut


If you have been searching for the perfect pistol caliber muzzle brake, you likely have run into quite a few that are merely cut-down versions of full-size brakes. The Rex Silentium GunFighter Muzzle Brake resets the bar to new heights with their line of muzzle brakes. If you run pistols, a pistol caliber carbine, or a sub-machine gun you simply have to get your hands on a Gunfighter Muzzle Brake.

This Is as Serious as A Heart Attack

This pistol carbine compensator is proudly made in the USA out of American steel. No doubt, the first thing you will notice is that it’s very light and compact but don’t let that fool you. This brake didn’t come to play, it came to conquer. This little pistol caliber muzzle brake lives to conquer your weapons recoil and muzzle rise so you can do your job and do it well.

Fast, Flat, And on Point

Whether you squeeze off one round or burn an entire magazine this pistol carbine compensator delivers. If you have the license and the equipment to do so, the fact that this baby is rated for fully automatic fire is right up your alley. In fact, the faster you fire, the better the GunFighter Muzzle Brake performs. Its profile is uniquely suited to iron sights, you’ll find that the brakes flat top keeps your sight plane clear. You will notice that this pistol caliber muzzle brake is ported on the sides and top but not the bottom. That gives you great performance without a dust cloud in your face when firing from a prone position. So, don’t ever “spray and pray” again, take control with a GunFighter.

*Due to the added weight to the barrel and recoil reduction, it might require using a lighter (than factory) spring rate recoil spring on some semi-auto pistols.

Write a Review

9 Reviews

  • Stribog A3"Muzzle Device

    Posted by Simon on 17th Sep 2020

    Reasonably easy to install and lock nut works well on the Stribog. Muzzle rise and blowback are well controlled and bringing the red dot back on target is very quick and steady. This is the only device I have used besides the thread projector on this weapon, so not very comparable to other devices, but control of the weapon is easy using this device.

  • .45ACP Compensator

    Posted by Andrew on 29th Jun 2020

    This compensator works great! I put it on my CMMG banshee chambered in .45 and man it made a noticeable difference, especially when rapid firing. The price is very good considering how well it really works. I hand tightened it and even after 500 rounds it stayed completely tight. Great product, high recommend.

  • 45 acp comp

    Posted by James on 13th May 2020

    Looks great ...
    Works great


    Posted by William Gunter on 7th May 2020

    This was just the right item for a customer's gun, fit and finish were great and locked on just about perfect. Tightened it down with a 1/4 turn and done. Customer was thrilled. Definitely will buy this again or any of their products, if all like this. Fast prompt service, made ordering it a breeze.

  • Rex Silentium GunFighter Pistol Caliber Muzzle Brake

    Posted by Dennis on 13th Feb 2019

    I installed the Rex Silentium GunFighter Muzzle Brake on my 10mm Kriss Vector Enhanced 6.5" barrel pistol. Firstly, the quality and workmanship on the muzzle brake is impeccable. There are no machining marks and the finish is very smooth. Please be aware not to scratch the tightening nut which secures the muzzle brake in place. I scratched it. I called the OEM and they sent me a new tightening nut at no charge. OUTSTANDING CUSTOMER SERVICE!!! Secondly, the muzzle brake works very effectively on the Kriss Vector. While the Kriss Vector is not a light pistol, the GunFighter Muzzle Brake reduces the "snappiness" of the 10mm enabling very accurate rapid follow-up shots. Thirdly, while a very subjective observation, I believe the design, quality and beautiful finish on the Rex Silentium GunFighter Muzzle Brake compliments and finishes the somewhat austere looking barrel on the Kriss Vector. I would highly recommend this product!

  • Works great!

    Posted by Andrew on 15th Jan 2019

    Makes my 10 mm kriss Vector feel like a 22. No muzzle rise extremely controllable for follow-up shots! and all this for a very reasonable price when you compared to some of the $200 plus devices out there.

  • Muzzle Brake

    Posted by Edward on 13th Jan 2019

    Don't waste your money. Doesn't stay tight and causes the firearm to malfunction.

  • Item as advertised

    Posted by Ed on 31st Aug 2018

    Great fit and finish. Quick shipping.

  • Works as advertised

    Posted by Frank on 11th Aug 2018

    I work at a gun store and indoor shooting range in the Indiana. I bought the CMB-GF9 to install on my new Ruger PCC 9mm. The item arrived on time. I had the item installed by our gunsmith to ensure there would be no issues with how it was installed or set up. Installation took a few minutes and then it was off to the range. I felt the Ruger PCC had a little more recoil than I preferred and there was significant muzzle rise. These issues are more the nature of the beast for this PCC. In testing the set up I found the recoil significantly reduced to something more tolerable and the muzzle rise greatly reduced. The intent of this PCC is for USPSA PCC matches where multiple shots on the same target are routine. For this you need minimum recoil and muzzle rise since the times for some of the strings are less than 6 seconds for 6 shots including transition from one target to the next. This muzzle brake / compensator did exactly what it was designed to do. There were no problems during the testing and the device was still firmly in place when we had finished. I think the device is well designed, well made and well worth the money. And as a friend said - "It has a nice "cool" factor." I would recommend this to anyone who wants to tame an energetic PCC and score higher in PCC contests.

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