AEG UN 6.03 Technical Information download pdf (Page 80)

Practical A.E.G Upgrade 2006

Is aluminum piston more durable?

Is version 2 mechbox too fragile for M130 or above?

Aluminum is a light elemental metal notable for its relative lightness and

resistance to corrosion. It is a soft metal which is easy to shape and is highly

susceptible to impact damage. Therefore, even though it is stronger than resin,

it is not of a mighty strength.

Frankly, if you do not go beyond 400FPS, an aluminum piston doesn’t make any

significant difference in durability. In fact, with improper shimming and under

constant improper usage, its teeth will still get striped anyway. And because the

aluminum piston is heavy (at least heavier than a resin piston), it is going to

suck up more battery power.

It is believed by many that an aluminum piston (when comparing to a resin

piston) can impart more force on the mechbox shell and get it cracking up near

the nozzle. While this is technically possible, our experience shows that this can

happen even without an aluminum piston if you are using M130 or beyond with

9.6V+ AND with constant improper usage (such as non-stop full auto firing for

10 seconds or so). This can also happen on a Cybergun DPMS AR15 if you are

using M120 or beyond with GP 3300 8.4V+ as the material construct of its’

mechbox is less solid than the TM one. In fact, even a reinforced gearbox will get

cracked up under constant improper usage. The design of the Version 2

mechbox makes the area near the nozzle more fragile when comparing with the

rest of the shell.

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AEG UN 6.03 Technical Information Page 80