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Old August 14th, 2012, 00:11   #1
TM-M4A1
 
Join Date: Sep 2006
Location: OTTAWA
why low fps on full auto?

modified the gun to a high ROF setting at approx. 40 rnd/s. it shoots good at semi at a very steady fps around 400fps. however, when shooting full auto, the fps drops to below 300 fps.

plz advice what could cause this issue? and what problem should i look into. thanks very much in advance!
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