FX FX Impact M4 MOST IMPORTANT CHANGES

[carlos_hathcock]

I'd say the stock spring and hammer are maxed out at 170bar. I made these conclusions over thousands of shots from my M4 using a chrono.

My stock M3 700mm 22 cal can use about 125 bar of reg max. I would need a heavier hammer/different spring to make use of more pressure.

 

[JPSTEZ]

My stock M3 700mm 22 cal can use about 125 bar of reg max. I would need a heavier hammer/different spring to make use of more pressure.

Yeah, my m4 .30 compact is about maxed at 120 bar.