havent heard of them.
There are 2 definition of hop up
#1. Putting the desired amount of backspin on the BB for distance. I am pretty sure all Tokyo Mauri's have this. I cant find it on my MP5 though, I think its a switch.
#2. Putting new internal stuff inside like piston to give the bb more velocity. You will have to buy this hop up seperatley. It isnt cheap either. I spen a pretty penny on mine.
All Tokyo Mauri AEG's shoot 280 FPS. I have mine Upgraded to shoot 400 FPS. Trust me, if you ever play at an Operation (check the net for local ones) you will need a hop up of at least 350.
here is the site I order from, good prices and very reliable.
www.airsoftatlanta.com
For a great gun out of the box, Classic army Mp5. Arround 300fps stock, and comes with tac light grip. The grip alone is 90 bucks. This whole gun is onle 20 -30 $ more than the TM.