Did the patch fix the 10mm extended clip texture glitch? if it didnt im gonna bust a nut. Becuz im [censored] pissed and there was no need for a glitch like that.
Uhm, if you can tell me where you bought the extended clip I'll test it for you. They didn't give us a very detailed report on the patch.
What you're describing, the giant exclamation mark, means that the model for the 10mm with the extended clip doesn't exist in the game files. So either the gun isn't supposed to have that mod, or they just forgot to put the model in. Simple thing. Should be fixed.