joered11 Posted January 31, 2019 Share Posted January 31, 2019 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 Link to comment Share on other sites More sharing options...
Supporters Prisce Posted January 31, 2019 Supporters Share Posted January 31, 2019 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. Link to comment Share on other sites More sharing options...
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