[m61a1]

This is one of my early starter gun for skirmishing
The gearbox were strong enough to withstand modify 110 spring for about 3 years before it starting to produce hairline crack
don't forget to change the bushing to metal and re-shim the gear
the motor die quite fast, about 1,5 years it starting to slow down.
oh, the batteries were good if you use a good charger like an R/C battery charger
the included wall charger will destroy your battery.