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Big-bore rifles kick, and there is no way around that unless you put something serious on the muzzle. The Dead Air KeyMo 46 Muzzle Brake in 5/8-32 does two jobs at once. On its own it is a legitimate recoil-taming brake for calibers up to .458, and when you are ready to go quiet, it becomes the quick-detach mount for any suppressor running a Dead Air KeyMo adapter. That includes the Sandman series along with the Nomad, Primal, Sierra 5, and other cans wearing a KeyMo mount.
Here is the part that makes gunsmiths smile: this brake uses a muzzle-seating design, so it indexes off the muzzle itself rather than a barrel shoulder. That means no shim kits, no crush washers, and no fiddling with timing. It is built with big-bore barrels in mind, including those with little to no shoulder to work with. Thread it on, torque it down, done. The 5/8-32 thread pitch is a common spec on .458 SOCOM and other big-bore builds, so odds are good this screws right onto what you are running.
Dead Air machines this brake from 4140HT chromium-molybdenum steel with a black nitride finish, which shrugs off corrosion and holds up to the heat and pressure big cartridges generate. The porting is designed to distribute gas and pressure in a way that supports suppressor performance and service life, and the mount geometry resists carbon lock. Anyone who has wrestled a stuck suppressor off a direct-thread mount after a few hundred rounds knows exactly why that matters. At 2.58 inches long and around 3.3 ounces, it will not turn your rifle into a boat anchor either.
If you own more than one KeyMo suppressor, or plan to, brakes like this are how you build out a fleet of host rifles. Put one on each barrel and move a single can between them in seconds with a consistent, secure lockup every time. For a big-bore rifle you shoot suppressed even part of the time, this little piece of steel earns its spot on the muzzle.
It works with any suppressor running Dead Air's KeyMo mounting system. That covers the Sandman series out of the box, plus KeyMo-equipped versions of the Nomad, Primal, Sierra 5, and Wolverine with the right adapter. If your can wears a KeyMo mount, it locks onto this brake.
No, and that is one of the best things about it. The KeyMo 46 uses a muzzle-seating design that indexes off the muzzle itself, so shims and crush washers are unnecessary. It is a great fit for barrels with little to no shoulder, which is common on big-bore builds.
This version is rated for calibers up to .458, and the 5/8-32 thread pitch is a common spec on .458 SOCOM and similar big-bore barrels. Just confirm your barrel's thread pitch and bore diameter before ordering, since Dead Air offers KeyMo brakes in several thread patterns.
Absolutely. It functions as a full muzzle brake on its own, cutting recoil and helping the rifle stay flatter on hard-kicking cartridges. The KeyMo interface is simply there whenever you decide to attach your can.
| UPC | 810128161565 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | DA162 |
| Caliber/Gauge | .45 Caliber |
| Color | Black |
| Length | 6 |
| Model | |
| Package Height | 1.0 |
| Package Width | 4.5 |
| Product Type | Accessory-Muzzle Brakes |
| Shipping Weight | 0.25 |
| Thread Pattern | 5/8"x32 |
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