It is one of the earliest privately designed muzzle devices and was first developed in 1984.
To launch rifle-grenades a 22mm adapter is screwed on in place of the slant brake or other muzzle device.
The muzzle device is held in place by a spring-loaded button and is quickly detachable.
The weapon's barrel has an adapter for several types of muzzle devices.
A slanted muzzle device was added to counter climb in automatic fire.
Inconel is also used in the construction of higher end firearms sound suppressors and muzzle devices.
The muzzle device, externally similar to the muzzle attachment of the wz.
When a muzzle device is not being used, the threads on the muzzle can be covered by a thread protector.
The M90 was also equipped with a multifunction muzzle device and manual gas valve, enabling the use of rifle grenades.
Additionally, a multifunction muzzle device was designed, used to launch rifle grenades.
