Maple Leaf CNC Hopup Chamber Set for GHK/VFC M4 GBBR HPA Regulators & Lines BBA will shim your gearbox

BBA will shim your gearbox to get rid of as much of that annoying sewing-machine noise as is possible

It has been superseded by the more advanced Howa Type 89 from 1989 to 1990

it is possible to use it for TM M14

What makes them superior to a standard RIS is their ability to be customized to perfectly fit the owner's needs while coming in a far lighter form-factor

They are tightly connected

Maple Leaf CNC Hopup Chamber Set for GHK/VFC M4 GBBR HPA Regulators & Lines BBA will shim your gearboxCNC Hop Up Chamber For GHK VFC M4 GBB series Suitable for GBB inner barrel Maple leaf Crazy Jet Inner Barrel The inner Barrel is not included