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plastikpyro · December 22nd, 2008, 17:16

here's an quick update. I installed a Modify M4 (ported) bore up kit over the weekend and the chrono dialed the gun in at 430fps.

Stock King Arms M7A1 with stock 208mm 6.05mm barrel @ 300fps
+
Systema m130 irregular spring
+
Modify M4 Bore up kit
=
430fps

December 22nd, 2008, 17:16	#30
plastikpyro Trader rating Join Date: Dec 2008 Location: Sunny California	here's an quick update. I installed a Modify M4 (ported) bore up kit over the weekend and the chrono dialed the gun in at 430fps. Stock King Arms M7A1 with stock 208mm 6.05mm barrel @ 300fps + Systema m130 irregular spring + Modify M4 Bore up kit = 430fps Last edited by plastikpyro; December 22nd, 2008 at 17:26..