it works for what it was designed for... increase back pressure and improve cycling issues on afflicted shorty AR's.
Just to be clear, it is IMPOSSIBLE for any device to increase pressure in a rifle barrel. As the bullet travels down the barrel, the area into which the gas is expanding constantly increases. The laws of physics state that it is impossible to end up with a higher pressure in a larger volume given the same amount of gas.
A muzzle device like the KX3 "may" increase the pressure dwell time but it can NEVER increase the back pressure.
Having been through the design process on a like muzzle device I am somewhat scheptical about these devices ability to increase the dwell. The bore in the KX3 is huge and the expansion chamber is quite small with no gas diversion structures.
Typically what happens in a space like that is the expansion chamber pressurizes and then following gases simply flow down the bore and out of the device without being disrupted.
What a KX3 really does it direct blast forward which is useful on a short barreled PDW or carbine.


















































