TM G3 HC is just basically a tarty G3 no mosfet & Shortstroked 3 teeth pushing 290fps doing say 25rps
That is it when you break it down to the bare bones - nothing awesome except for the name
Assembled well but then you are not buying a £100 JG G3 at the end of the day
The High Cycle is just a 13 tooth sector gear - first 3 teeth cut off to shorten the stroke & allow faster return of piston
grab a dremel & DIY