Technical information

Practical A.E.G Upgrade 2006
Page 52 Copyright 2005,06 The AirsoftPRESS (Hong Kong). All rights reserved.
Why (and why not) should I keep the stock plastic bushings?
Why (and why not) should I replace the stock plastic bushings with
metal bushings?
The plastic bushings should do just fine under the following conditions:
 they are adequately lubed
 your gun runs at less than 330~340FPS
 the spring in use is not the hard & short type
 you do not push the gun with high power battery (a GP 3300 8.4V or a Sanyo
1300 9.6V may be too much)
 you often keep your gun under proper usage
Even without upgrade, you should in any case replace the stock plastic bushings
after around 13000~15000 shots.
You should use metal bushings whenever you want to go beyond 350FPS or
beyond (meaning anything stronger than a M100). If you use a hard and short
spring, you should switch to metal bushings. Note that shimming must be done
all over again when you install new bushings.
When installing new bushings, make sure you have them properly aligned with
the place holders. Additionally, we recommend that you glue them in place, or
otherwise they may go loose and spin together with the gears after prolonged
use.
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