Maxx Model M4G (Standard M4) grip It has been designed to

It has been designed to be able to work with virtually all pistons / cylinders / cylinder heads

Screw for securing device in the gearbox

After enabling this mode

Cooler motors

Maxx Model M4G (Standard M4) grip It has been designed toMaxx Model Newest Generation of Hop Chambers. The M4G takes GBBR style Buckings and is used for M4 Style AEGs. All new hopups no longer use screws on hopup arm, replaced by oring to keep the pivot pin, updated internal design tighter tolerances to improve consistency and accuracy. BB are lined up straight and consistent 95%, BB position is seated consistently and repeatedly after each shot and stacks up perfectly. Comes with spare inlet adapter