nordlead on 13 February 2010
ohh, a longshot....
Go buy a M4 spring - like this one - http://www.cactustactical.com/osc/car15-buffer-and-spring-p-1236.html (note, you could find a cheaper spring that works just as well, but I've seen people who use these)
and take the thing apart, and insert this spring in place of the old spring. You'll get enough power to leave welts 
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