to get it to run high-powered batteries, but
most standard parts (even in high-end AEGs
from the likes of VFC, G&P, and CA) are not
that great compared to aftermarket highspeed upgrades. This is why I personally
get my work done for me; I am good with
gearboxes but not to the extent of grinding
down metal teeth and fitting MOSFETS.
A while back my friend Neil (Midas
Airsoft) told me about the best upgraded
gearbox he had seen. This was the ASG
Ultimate gearbox – and what a gearbox
it is! Most of the parts inside are of the
highest quality and the finish is fantastic.
These gearboxes come with very well
done shimming, good greasing and work
an absolute treat out the box. As with all
gearboxes the AOE and short-stroking still
needs to be done though, but at least you
know they will last for a good long while
when it is done!
MOSFETs (or ‘Fets’) are Metal Oxide
Semiconductor Field Effect Transistors, a
mighty long acronym! Fets are transistors
for amplifying or switching electronic signals
to a subject, in our case the motor. Think
of this as an electronic gate which opens
and closes allowing for instant power to the
motor. This helps prevent over-spin (which
happens a lot on semi-auto: you fire but
it jams and you have to switch to full-auto
then back); combined with AOE corrections
and short-stroking this makes your gearbox
fire as well as a Systema – if not better!
There are different types of Fets which have
active braking (this basically ensures that
over-spin does not happen and is the best to
buy) and fused (cut off if there is a problem)
as well as programmable.
There are several programmable Fets
available: attachable ones that connect like
a battery but don’t offer the same quality
as a soldered one, some three-round burst
Fets which are very popular, and one main
other. It’s called the Airsoft Systems Control
Unit (ASCU) and has been seen in these
pages before. It really has raised the bar for
all Fets out there. In the pictures you’ll see
the f 'V