FX impact V/S Preist

Ran across this video, Not sure where its made or who the guy is?

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Try this one if the other does not work.

https://www.youtube.com/watch?v=7W4gOUfQhPU&t=30s
 
For some is dumb, for others (like me) is very important the sound and harmonics...use to have a Marauder and it shoots well (average) but hate the sound even with depinger...the Impact sound is like a precise machine ajaja donno how to describe it. By the sound I know if something is wrong with my Impact...is that simple.
 
Wiseguy

So the sound is more like a squelch sound? Can you clear that up? To me it sounds like compressed air , Sounds nothing like Hammer bounce, 

I been told it sounded like a whistle, 

Mike

Yeah, a squelch from the regulator as it refreshes again with each shot (I guess you can say sort of like a whistle). It was annoying and mine also had hammer bounce. I fixed that by putting a small piece of believe it or not, a little slice off a pencil eraser between the hammer spring and the back of the hammer, and it did not affect the speed of the pellet.