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Old June 18th, 2006, 08:16   #11
Gryphon
 
Join Date: Mar 2005
Location: MB
You don't really need an aluminum piston head to make a lot of noise. Most of the report the enemy will hear would be the sudden release of air from the muzzle rather than the clacking of the piston head. Once you start compressing air faster with a heavier spring the volume of the report from the muzzle starts to increase. I have a 400 fps spring in my CA249 as its only upgrade and it sounds like a GBB rifle firing when you're in front of it.
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