An Overview of Mosin Nagant Muzzle Brakes

One of the biggest hurdles to becoming a successful marksman with a rifle is overcoming the rifle’s recoil impulse, muzzle blast and supersonic crack. The easiest way to tame all three of these issues is by using a silencer or sound suppressor on your rifle. The second most effective way is to install a flash suppressor. Unfortunately these devices are heavily regulated if not outright banned in a number of jurisdictions by politicians who know nothing of their use and the safety they provide to shooters. For shooters who live in jurisdictions where legislation is based off the latest spy novel or screenplay, there is a third option: the muzzle brake and a variety of companies are making these for the Mosin Nagant family of rifles.

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What Do Muzzle Brakes Do?

p>Muzzle brakes do very little to reduce the supersonic crack of a high powered rifle bullet. In fact, some designs have earned nicknames such as “loudener” because they actually increase the sound signature of a supersonic bullet, at least to those standing to the side or downrange of the shooter. Their primary function is to divert hot gasses produced by the combustion of the propellant to the top and sides of a rifle’s barrel at the muzzle to counteract the recoil that causes the muzzle to rise. The best method of installation requires threading of the rifle’s barrel.

Unfortunately Mosin Nagants are a diverse lot of firearms that were manufactured over a period of 7 decades and by as many as 20 countries. To make matters worse, many Mosin Nagant rifles do not have perfectly centered concentric bores. This means that the external threads may not be harmonious with the diameter of the bore, causing a threaded muzzle device to not perfectly line up. The end result can be a bullet striking the muzzle device from being out of spec.

Extern

External Attachment

from threading the barrel, some muzzle devices attach externally, via set screws or some other method of attachment. Again we advise caution as Mosin Nagant rifles vary in respect to front sight base diameters, barrel thickness and concentricity of the bore. Many of these muzzle devices may appear to have an ease of installation, but in fact should be checked and installed by a competent gun smith.

This muzzle brake installs via barrel threads. Again, even though a die is included we recommend this job be performed by a competent gunsmith for concentricity in relation to the bore. Installed properly, these brakes tend to last longer and are more effective than the designs which mount to the barrel and front sight base via set screws as there is no chance of gas leakage.

We will look at two of each style, all four are made in the USA and they do qualify as a 922R part with regard to building compliant rifles per the BATF. All four are machined from high quality steel and coated in a black oxide finish for corrosion resistance.

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The Best Mosin Nagant Muzzle Brakes Reviewed

style="font-size: 14pt;">Mosin Nagant 91/30 Threaded Muzzle Brake by Firewerks
At first glance, Firewerks muzzle brake for the Mosin Nagant strongly resembles various brakes used on the AK-74 series of rifles. This is a solid design in smaller calibers and the company seems to have refined it for big bore use.

This brake is designed for all 7.62 mm barrels which have a 15mmx1 right hand thread – so you could use this on other guns as well. As most Mosin Nagant barrels are not threaded, this will require work by a competent gun smith. After the threads are cut, the brake will need to be properly indexed with the included jam nut.

The brake features four ports. Two large square shaped ports on the sides divert the gasses left and right while two additional smaller ports on the top direct the gases upward to reduce muzzle climb in order to keep the shooter on target.

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Mosin Nagant M91-30 Muzzle Brake
Texas Precision makes a variety muzzle brakes for the Mosin Nagant family of rifles and this one in meant for the M91-30 series.

These are attached via set screw and Texas Precision does a fine job of ensuring that the inside diameter of their brakes are the same as the outside diameter of the Mosin Nagants’ barrels and sight blocks in question.

The brake features eight ports. Two on each side divert the gasses laterally while four additional ports on the top direct the gases upward to reduce muzzle climb in order to keep the shooter on target.

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Slingshot threaded muzzle brake for Mosin Nagant
The Slingshot brake by Viper speed is designed for all 7.62 mm barrels which have a 15mmx1 right hand thread. As we mentioned previously, most Mosin Nagant barrels are not threaded, this will require installation by a competent gun smith. After the threads are cut, the brake will need to be properly indexed by means of a crush washer that is not included.

The brake features four ports. Three on each side divert the gasses laterally while three additional ports on the top direct the gases upward to reduce muzzle climb in order to keep the shooter on target.

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Mosin Nagant M44 Muzzle Brake

Texas Precision makes a variety muzzle brakes for the Mosin Nagant family of rifles and this one in meant for the M44 series. These rifles have shorter barrels, being designed for cavalry and artillery units and as a result, not all of the powder combusts in the chamber. This in turn makes for a dramatic muzzle blast with the loss of accuracy and excessive recoil when compared to a longer barreled Mosin such as the M91/30.

Like the M91-30 version mentioned above, this one is attached via set screw and Texas Precision does a superb job of ensuring that the inside diameter of their brakes are the same as the outside diameter of the Mosin Nagants’ barrels and sight blocks in question.

The brake features a total of eight ports. Two on each side divert the gasses laterally while four additional ports on the top direct the gases upward to reduce muzzle climb in order to keep the shooter on target.

>>Click for full specs, pricing and more reviews<<

Custom Muzzle Brake Video – Before and After

t-align: left;">Take a look at before and after videos of a custom muzzle brake install. Muzzle rise and kick is reduced significantly.