Piston head O ring VS cylinder head O ring
Don’t confuse a piston head O ring with a cylinder head O ring. They are 2 different things. When buying a new piston head O […]
The APS hybrid v3 gearbox
The V3 Hybrid gearbox found in the APS KU series is exactly the same as the one in use by the UAR. However, the inside […]
Sector gear delayer
The delayer is helpful when you are having a high ROF setup or that you are using heavier BBs (such as 0.25g BBs). This is […]
Ball bearing spring guide and piston head
You don’t always need a ball bearing spring guide and a ball bearing piston head combination. However, installing these can reduce tension built-up and can […]
Mechbox migration between gun models
If you want to migrate your V2 mechbox from one gun model to another, pay attention to the following issues: 1, if you want to […]
Air tightness at the cylinder
To test for air tightness at the cylinder set, block the cylinder head nozzle with a finger and then try to push the piston. If […]
About the PTS M4 ERG
The primary difference between a regular EBB AEG and a PTS M4 ERG is the gearbox+recoil shock unit. There is an extra recoil shock unit […]