help with weapon hack...!!!!

ok so i have the hacks but please, im new at this, can someone tell me how to use the gun hack....(plz try to be as detailed as u can)
and one more thing....whats "roll"

THANK YOU.

the only thing that i know is u hit backspace button

The weapon hack is currently detected. YOu have to wait until someone makes a new hack. Everything else in the pub hack works except weapon and speed.