Asg mxr18 assault

[joered11]

I have a asg msx18 assault m4.

it was a great rifle to use when I couldn’t be bothered with my sniper (I don’t usually use a asg it’s usully a sniper), the gear box split so I got a donar Nuprol gear box but the FPS has dropped massively and the rof is terrible.

is there any upgrades I can do to sort this issue? 

Ps.

link and specific products would be great as I’m more of a sniper and gbb pistol kind of guy

 

[Prisce]

Did you get a whole nuprol gearbox(internals too) or just the shell?

Did you rebuild the box?

The FPS drop is likely compression(air seal parts), or a change in spring(if new box entirely).

To increase ROF, you can get a better motor, maybe a 22TPA, Look at @ak2m4 for parts. Great prices, even better service.