[Randomserg]

I am surmising that the piston head o-ring may have given away...thus your fps drop. Don't buy anything else until you can confirm.

First time working on a gearbox. I put 13:1 shs gears, shimmed, corrected aoe #airsoft #airsoftgun
Update I put it back together I corrected aoe and shimmed I was waiting on the magnet for the sensor and here’s how it came out. Also made my first YouTube short lol