Technical information

Practical A.E.G Upgrade 2006

High Accuracy Upgrade

What are the key elements of a high accuracy setup?

Does a V-HopUp help?

High accuracy in semi-auto mode requires that you have a long and tight barrel

plus a good hopup unit (!) for stabilizing the bullet’s flight path.

High accuracy in full-auto mode ALSO requires that the FPS and ROF

performance of the gun be highly CONSISTENT. A good quality spring driven

with stable horse power and the resulting smooth piston movement are

essential.

(!) Strictly speaking, the back spinning effect created by the hopup function

often produce uncertainty and can lead to poorer accuracy. However, we have to

face the reality - without back spinning the bullets will not fly far enough.

The behavior of a poorly designed hopup unit tends to be unpredictable and

unfixable. Test your hopup unit with 0.20g or 0.25g BBs (!!). If you find poor

accuracy, be ready to shell out extra $ to get the unit replaced.

(!!) In any case don’t expect accuracy with 0.12g BBs. They are way too light.

The TM M4A1 BOYS version, the Cybergun A15 R2 and the TM AKs use a hop up

rubber which has two points of contact with the BB. Such a structure produces a

cut in the middle to facilitate V-hop up, which is believed to produce less power

loss through the hop up process and can allow for more stable BB flight.