G&G M4 blowback problems/ upgrades

[7th-Airsoft-Corps]

Does anyone live in Tucson with g&g m4 blowback gearbox experience? I'm planning to upgrade but I don't have much gearbox experience and I don't want to break the blowback attempting to upgrade it. If so I'll probably meet you at toxic sometime once I order the parts (m120 spring and bore up cylinder kit)

The reason I'm upgrading is because my fps is only around 300 and I'm not sure why the problem is. I think it may be a not so good air seal in the cylinder. I'm had the gun for almost a year now though so maybe it's time to put some maintainence parts in it.

Any advise or help would be appreciated!

[SLINKEY]

Iv worked on a ton of tho's man, the stock spring is your problem. your gunna need a new m120 spring toss that in there and ull be at 400 fps with a .2

if you wanna get crazy toss in a ball bearing spring guide. Really the spring is all ur gunna need to get it to 400 fps, the rest would be over kill..


A bore up cilinder is only really nessacary if you want a longer barrel, they really don't add any significant increase in fps

[7th-Airsoft-Corps]

Thanks, also one problem, I was being stupid last night and took apart my gearbox and now it won't work, I have no idea what's wrong with it but it's something in the gearbox, when I first opened it up it like exploded and the parts went everywhere. I put it back together how I thought it went but I probably did something wrong and it's not shooting now. I will probably be going to toxic on Saturday night if you want to come and see what's wrong.

[AzAirsoftInnovations]

im up in phoenix man, i would sudjest you tubing version 2 gear box, and see if you did anything wrong

[7th-Airsoft-Corps]

I did and re-assembled it but it still won't work. When I pull the trigger it just makes a sorta click and if I hold the trigger down the wires get super hot, I've already tried switching the wires on the battery end and on the motor and it still clicks. It's like a click then a sort of werrrrr like the gears aren't turning