joered11 Posted January 31, 2019 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
Supporters Prisce Posted January 31, 2019 Supporters 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.
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