The MkI .308 Effin-A Compensator is designed to allow users the ability to adjust the manner in which the gas exits from the weapon. The MkI Effin-A features 8 columns and 4 rows of exit ports that can be either opened or closed through the very simple use of set screws. The exit ports are not threaded completely through to eliminate the possibility of the screw being over turned into the chamber. This feature also allows the screw to “bottom out” increasing tightness and ensuring that it will not work itself out under the pressure of the gasses being released by the weapon.
The Effin-A Compensator weighs in at 5 ozs. Allen Key is included.
We do not recommend stacking more than two of these on top of each other.
If you do so, you do it at your own risk and it will also void the warranty.