Stippling the gripping surface of polymer-framed guns is usually done with a soldering iron.
How to stipple your gun
How most of you on here look when you stipple your own Glocks
TO STIPPLE OR NOT TO STIPPLE, THAT IS THE QUESTION!
Grip Stippling vs. Silicon Carbide: How to DIY Your Firearm for
Pistol Frame Stippling (Polymer Frames Only): MGW
Recommendations for stippling and undercut on a G19
Laser Stippling – Accurate Arms USA
Grip Stippling - Aggressive
Stipple Diagram
Grip Stippling and Frame Modifications
Stippling Price List — CW Gunwerks
Proper Combative Pistol Grip (And A Whole Lot More) - Guns and Ammo
Talon Tip - aggressive stippling texture – OTDefense LLC
Stippling Handgun Grips - Glock G43