Here’s my mx18 carbine made by asg comes with one crane stock lipo and two mags it’s also had a maple leaf 60 macron bucking and flat nub installed also a new 105 asg spring fires lovely but only use high grade bb’s such as asg devil etc as cheeper ones block the bucking
It’s also had a new piston as the one that was in it had plastic teeth so it’s got metal teeth now and it’s had a new micro mosfet as the old one popped common fault apparently but now it’s tucked away in the buffer tube
As for the FPS I’ve only tested it on .28 bb’s as it’s all I’ve got FPS @ 280 ish and 86 joules ish so will be higher on .20 and .25 but as for how high ???