White Screen...

When I put in a mod, and when I use it in game. (Say it was the M590 Military) The screen stays grey and I cannot fire. But when I change weapon, ( a un modded weapon) The screen goes back to normal. Help?

Umm Im not sure what happened.

Hmmm. But I got a mod that makes the shotgun attack faster, I replaced the GUNZ_M_PV_SG File with a custom.