The Daystate Mk 4 takes the revolutionary electronic system to the next level.

Featuring a new version of the Harper Patent electronic firing system called MCT (Mapped Compensated Technology), the new system increases shot count over previous versions by 100%. The increase in efficiency also makes it more quiet to shoot.

The Mk4 iS utilizes an LCD display that allows the shooter to see, cylinder pressure, battery voltage, magazine status and shot counter.