FPS
So, my M4 was shooting about 275 FPS with a 0.2g bb with a SHS M110 installed. I took it apart to install a Guarder M120 spring and stretched the o-ring. It is now shooting an AVG of 316 FPS. Keep in mind, my gun is short stroked 2 teeth, but so is my PDW and it is shooting 325 FPS w/ 0.2g bb and a Prometheus M110. So my question is, is why are my 2 guns shooting different FPS and the weaker spring is shooting faster? Air leak somewhere on the M4? Bad piston O ring? The cylinder head is teflon taped and compression check before putting together was great. Just figured I'd ask as more knowledge is great. Thanks!
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WREAK HAVOC
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