Gearbox

Available in :- 80% Ported- 75% Ported- 60% Ported- 50% Ported..

Preload kit designed for JM MP5. Preload gels from mag reservoir to prevent dry firing...

Full wiring set for JM Gen.8 Gearbox. With switch, mag polarity connectors and motor connectors...

Tappet Plate replacement unit for JM Gen 8/9 gearbox...

Normal aluminium cylinder. Drop in replacement for most gearboxes...

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Metal spring stopper replacement part for your JM gen 9 gearboxes...

Replacement O-Rings for your gearbox.In a set of : 1x 19*1.5 and 1x 19*2.4..

Complete set of stock wiring to replace any worn out wit wiring on your Gen 8 gearbox. Recommended to be used with the JM Gen 8 Gearbox Nylon Gearbox by SKD sold separately on this website...

Core Metal trigger replica for the AR15Available In :- Metallic Red- Black..

The new JM Gen8 metal trigger from Core.The new Stinger trigger allows you to have a better trigger reaction with a thin trigger unit. It is built straight to ensure that the trigger doesn't break easily with a pull.Colour: Black ONLY..

Only suitable for old JM gearbox like JM Gen1/2/3 M4, JM SCAR etc..