Gen 9 (Stage 3 comp kit) M4A1, ACR J10
20 in stock
the ultimate internal gearbox set up. Full competition grade, Max performance.
- SHS Gears 18:1
- Alloy 14 tooth Piston
- CNC Piston Head
- Alloy Cylinder head
- SHS 7mm bushings
- Hardened Pinion gear
- Fighting bro anti reverse latch
- iodised 100% Cylinder
- Fighting bro shim kit
- Nylon Tappet plate
- Ultimate O ring
- Return spring
- Red S460 Long shaft Motor Chai Hai
- 1.3 spring
- Metal comp trigger
Nylon gearbox shells are a must, do not install into a plastic gearbox.
We do not take responsibility for any damages to Parts or gearboxes once you begin to modify your blaster, these parts are used in all our custom builds in our store & work to a high quality. We do cover damages if the gearbox is being assembled by our tech under warranty, as this product needs to be assembled and installed by a professional to get the maximum strength.
we DO NOT cover parts damaged by fitment of yourself or any third party. everything that we have sent in this pack has been quality controlled and assessed before posting. In buying this product you have agreed to these terms and conditions.