I included Eric Wesselman's original informaton, on
Black CA Adhesive & InstaSet
for TruGrip®, and why you'd want to use it.

Mike                   

• Black, rubberized instant adhesive bonds the front and rear TruGrips together to form a super-durable, unitized grip.  Glue does not directly contact the frame of your pistol.

• Strongly recommended for all professional users.  Hard-core competitors may want to use the glue as well, but it is generally not necessary on a competition pistol unless you have a very strong grip or have some other mitigating circumstances.  You'll know if you need the glue.

• Sold in two-bottle kits: one bottle of glue, one bottle of instant set spray.  Also available individually for replenishment by request. [Ask Mike]

• Yes, you need both the glue and the InstaSet.  Otherwise the glue takes forever to dry.

• Darned sticky stuff. Not for use by kids. Keep aways from pets - especially if your dog has a cynical streak like mine (don't ask).

• Very handy adhesive for other applications such as gluing plastic, archery, and gettting rubber to stick to metal.

• Will *not* come in contact with the frame of your pistol if carefully applied.