Maxx Model M4G (Standard M4) grip MR Hop Bucking $10

MR Hop Bucking $10

Sometimes with Jefftron you may need to apply 2-5 percent AB depending on speed for proper nozzle control

Cooler motors

Less mechanical noise

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

Maxx Model M4G (Standard M4) grip MR Hop Bucking $10Maxx 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