Dboys M4 S-System Upgrade
 

Hey, I was looking for some help in building an upgrade list for my new gun. So far, from the thousand or so rounds that I have run through it, it is a really solid build. However, I am looking into replacing the plastic hopup with a metal one, and maybe throwing in a tightbore barrel. Also, when I fire on semi, I can hear a weird spring 'twang' sort of thing. Any suggestions on what it is?

If its a one peice hop up try the lonex its nice
Promy bridge nub and smooth sleeve
Or a flat hop setup
Promy tightbore or madbull v2 python if you want cheaper
The twang sound is a cpl things its the trigger switch poping back
The actuall spring
And the spring in front of the hop up
Cause its a metal body itll echo/resonate a bit.

Madrigal, what are you trying to achieve with these upgrades? More range? What does your current stock setup shoot?

If it ain't broke, don't fix it. It's a DBoys after all! Aftermarket parts are compatible and will fit but you might start introducing other sources for air leaks to develop.

Well, the only things I need to replace are the stock barrel and the hop up, and that is just because the plastic one, while it seems sturdy, makes me a little uneasy with the rest of the stuff being metal. And the barrel is just for accuracy. It already shoots in the 400 (+-10)fps mark.

madrigal how do you like that gun i was thinking of getting one. Its between the Dboys m4 s-system or the (ares) uramex HandK G36CV. Any thoughts