SHS AEG Grooved Gearbox Cylinder (400mm - 455mm Inner Barrels) (GG09-03)
SHS AEG Grooved Gearbox Cylinder (451mm - 590mm Inner Barrel)
SHS AEG Smooth Gearbox Cylinder (200mm - 350mm Inner Barrels)
SHS AEG Smooth Gearbox Cylinder (300mm to 400mm Inner Barrels)