you could use the 3M adhesive tape that blast-tech uses for his grips.
TCSS also has the grips, with the tape already attached.
only place i know to actually just get the rollls of tape, is blast-tech itself. i always ordered a couple rolls when i got grips, so incase of one coming off, or i had to pull them off and reset them, i had fresh adhesive for the grips.
so try blast-tech for some rolls of the 3M adhesive tape.