With the (ever) impending release of the Systema “Revolution” electronic fire-control mechbox, I decided to try a few other fire-control systems before this one comes out.

From Unconventional Airsoft (local in Canada), the Trigger Master AEG Fire Control Unit promises to offer the following:

• 3-round burst which becomes full-auto if the trigger is held down.
• Full computer controlled MOSFET driving of AEG motor, with active braking.
• Overcurrent protection (the unit can safely replace the AEG fuse)
• Ease of installation (the unit is the same size as a standard fuse holder)
• Full PWM motor control to maintain a constant performance, and reduce motor and drive train stress.
• Firing modes, burst timing, and rate-of-fire are all programmable by the user.
• Thermal protection (temperature monitoring, notification of user of overtemperature condition)
• Over- and under-voltage protection and warning.
• Open sourced hardware and software design allowing modification and upgrades if you so wish.
• Custom programming and features available from Unconventional-Airsoft.

The unit is on order, and should be here shortly.  I’ll begin the review with the installation process.

My vantage point is from that of a novice AEG upgrader (I’ve done gearbox dis-assembly, and re-assembly - successfully, I might add), but limited gearbox/AEG electrical work.  While I’m not afraid to get my hands dirty & improvise where necessary, I can definitely follow a set of instructions - which will be reviewed as well.

It’s my firm belief that any airsofter that know his/her way around a gearbox should be able to install an upgrade like this - so we’ll put it to the test.

Product homepage: http://unconventional-airsoft.com/2008/03/17/trigger-master-aeg-fire-control-units/

TTYAL.