ZTWWorks Gen 2 Magazine Follower (Pack of 5) AEG Gearbox Upgrades Gearbox: V2 ECS Avalon gearbox

Gearbox: V2 ECS Avalon gearbox w/ quick spring change

Tokyo Marui and other similar Hi-capa airsoft pistols

and bearings

Stamped Steel construction

ZTWWorks Gen 2 Magazine Follower (Pack of 5) AEG Gearbox Upgrades Gearbox: V2 ECS Avalon gearboxThe problem with most AEG magazines is that the internal BB channels are double stack, while the followers are typically undersized single stack followers in order to go all the way to the top of the mag. Double stack sized followers such as the Gen 1 followers would typically not go all the way to the top. Undersized followers cause excess friction and in some cases will cause straight up jams and BB deformation because they apply more pressure