Technical information

Practical A.E.G Upgrade 2006

Why (and why not) should the spring be ground?

How to facilitate spring spinning?

Grinding is the process of grounding the ends of a spring. Springs found in TM /

ICS / Cybergun AEGs are properly grounded, which look highly professional. It is

a bit disappointing to see that many of the springs found in the CA guns have not

been grounded.

Generally speaking, when a spring is ground on both ends, it can spin more

freely during compression. Do it yourself grounding: It is very easy. Just take

the spring to the kitchen, turn on the fire, have the end of the spring heated, and

then ground it by force.

When using a stock TM Piston / Piston head set, you will for sure want at least

one end of the spring to be grounded unless you don’t want the spring to spin.

The TM type Piston Head uses the following metal spacer unit to affix the head to

the piston:

There is huge space gap between the inside of the piston and this metal spacer

unit. If your spring is not properly ground on this end, sooner or later its’ tail will

get trapped into the gap, thus stopping the spring from spinning. To solve this

problem, you may either put a big-enough metal washer on top of this unit to

cover the gap, or replace this spacer unit with a simple nut (refer to the simple

bolt and nut mechanism deployed by the ICS piston head set).