mp5 broxa upgrade

[qpwerx]

hi there
i have an broxa mp5 and i want to upgrade my gun
i did already replace the battery for an 9.6volt 3600mah pack
replace the barrel for an element in 0610 6.04 inner diameter
...
i know that the v2 mekbox of this version is all metal parts
i dont need my gun to shoot 500fps but to have a consistent 380fps
and feel free to play with it without any problem of reliability about it
i want it to be as accurate as its possible to ... im thinking to put an 398mm barrel whith a silencer ... not sure

can you help me im new and need some advice
thank you very much

[Crunchmeister]

If you want consistency, then add a bearing spring guide and a new hopup rubber. That combined with the tightbore will get you some pretty consistent shots. Also, consider adding a sorbo pad to protect your mechbox. Those weak mechbox shells don't generally survive very long shooting at those velocities. And while you're in the mechbox, install some metal bushings (no ball bearing - just standard metal bushings) and clean and reshim the gears. That should give you a reliable and consistent gun.

[qpwerx]

great
im on my way to order those items
but i have a question about the sorbo pad??
where this part goes in my gearbox?
thank you very much!