Grizzly Gunworks Ghost Protocol Muzzle Brake

As with all things Beowulf, finding a muzzle brake can also be difficult. If you have standard threading on your barrel, there are a few great companies out there making brakes for this application. In our case however, we standardized on the less common 19 x 1.25 thread pitch. So when it came time to finish off our barrel, we knew we would have to go the custom route. Lucky for use the people at Grizzly Gunworks, were more than happy to help out. Below you can see a custom Ghost Protocol brake on a .50 Beowulf A2 upper.


Grizzly Ghost Protocol Muzzle Brake
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Having never worked with Grizzly before, we were not sure how the process would go. A few email exchanges and we were excited to hear the process would be easier than ordering a barrel. All we had to do was pick a style, and provide a drawing of the specs of our application. Wanting to keep everything simple for the review, we opted for a thread on Ghost Protocol muzzle brake, threaded in 19 x 1.25. A few weeks later this beauty showed up at our door in bead-blasted stainless steel as requested.


Threaded 19 x 1.25 Muzzle Brake In Stainless
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Our first impression was, "what a beast". As with most accessories purpose built for slinging half inch lead, this was heavy. Tipping in at over 12oz, this brake helped reduce perceived muzzle rise with mass alone. Once installed, the brake added just over 2" to the total length of the barrel. While our test platform was already fairly heavy for an M4, this brake did add some noticeable weight. In our case with a 9" SBR barrel, handling did not change that much. However, if you are installing this on a standard 14" or longer barrel, you will definitely feel it.


Threaded and clamp on
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One concern that I do have, is the split design to retain the brake once it is threaded on. It relies on tension from two hex bolts. While this method makes clocking the device very simple, it does not look as clean as a more traditional crush or peel washer design. So depending on your level of gunsmithing, this can be a pro, or a con. That said, the craftsmanship was top notch. The finish was extremely uniform, and the brake was concentric even when checked with a mic. Even our odd-ball 19 x 1.25 threads were perfectly cut and sharp.


Recoil reduction
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With the description complete, what really matters is how it performs. While the added weight did slightly alter the weapons balance, the reduction in recoil was appreciable. Most people who fired the weapon agreed it kicked similar to a gas-operated 7.62 NATO round. Without the brake, I would describe the kick as something between 12ga 00 and a 12ga slug. Cleaning the weapon with the brake was a snap, although quite a bit more messy. CLP tends to collect and stay hidden in the brake for quite some time. So all in all, whats our take? If you are a bench-rest shooter, this is an excellent brake with no drawbacks that should concern you. If you are a casual plinker, the same can be said. The only place this brake may have some significant drawbacks is in the tactical environment, where its added weight and bulk could wear on you after carrying it for hours in the field.