I have been shooting pistols and rifles for as long as I can remember. Most were Ruger or Savage that were passed on to me by family members. The pistols, like the Super Single Six, were wheel guns and I became a pretty good shot.
About ten years ago, I needed to obtain a CCP because of my job, and the search began for a small, reliable pistol that I could carry on a regular basis.
Based on the recommendation of several friends and the research I did on-line, I decided to get a Glock 27 in .40 S&W. The transition from revolver to striker-fire pistol took some time. I did not really warm up to that first Glock until I used it and carried it for a few months, but like most shooters, the little Glock grew on me. After my retirement, I decided to trade in the baby Glock for something bigger. I work daily in my garage machine shop, making and customizing knives and carrying a larger pistol would be no problem.
I picked up a used G21 in .45 and really liked it, except for the grip. It just did not feel "right" in my hand. I blamed the larger "hump" on the back strap. In addition, the finger grooves just did not accommodate my large fingers. I had to change the angle of my wrist to shoot the gun accurately. I mentioned this to several friends at the gun club and some of them said that they had the same problem...they loved their Glock's' for their simplicity and reliability, but the grooves and grip angle did not feel comfortable. As a result, they had sent their Glock's out to have a grip reduction done. I tried their pistols and the difference was amazing! I had to get this done to my Glock!
After calling on my "Google-Fu," I found many craftsmen offering this service. I also found several do-it-yourselfers that showed videos of how to do the work at home. Most mods required using epoxy to fill the stock grips, then grinding, sanding and painting to do the job. When I talked by phone to a good friend who is a Glock fanatic, he related to me that he had done several mods himself and found out that you could do the work without epoxy filler by using a heat gun and a bit of "persuasion" to move the polymer around and mold it into the desired shape. The finger scallops needed to be filed or removed carefully with a grinder, but after looking at pictures of his guns, I felt that I could tackle the project myself.
Since my shop is equipped with a 2 x 72-belt grinder, removing the finger scallops and the trigger guard "horn" were easy. Just be careful not to take off too much material at the front of the trigger guard. It houses the prong of the slide release spring. I also reduced the amount of polymer where the trigger guard meets the grip so that I could get my hand a bit higher up on the pistol.
Using a heat gun, I began the slow process of warming the back strap and gently pressing and rolling the grip on my workbench. Sure enough, the "hump" gradually disappeared as the plastic was reshaped. I continued this process until the back of the grip was nearly straight. You have to use patience while doing this step. Take your time and apply a generous amount of heat and pressure until you obtain the desired result.
Once I had the grip modified to my liking, I also added magazine "cut-outs" that would allow me to quickly remove an empty mag. One on each side of the grip. I did his modification with my Foredom flexible shaft tool. You could also use a Dremel, or similar rotary tool. I used a " drum attachment with 80-grit abrasive. To be sure and get these cut outs symmetrical, I applied blue painters tape to the base of the grip and did my layout with a fine-point Sharpie marker, after first laying out the scallops with a pencil and using a quarter as a template. After the cuts are made, go back over the edges with a fine grit piece of sandpaper to soften the edges.
Once the grip shaping was finished, I made a trip to the range to see if the grip angle was where I wanted it to be. Satisfied that the mods were correct, I decided to stipple the grip to provide a bit more traction. The secret here is to take you time and have a plan in you head of where you want to add the stippling before you start.
I went to a local crafts/art supply store and purchased a basic wood-burning tool. It came with a variety of tips for different patterns and was only ten dollars. I used a simple pointed tip to add the dimples in a crater-type pattern of varying size holes. The tool heats up quickly and stays hot throughout the process. Once you start, the procedure is easy and quite enjoyable. It doesn't take long to do the job. I added stippling around the entire grip plus a bit in front of the trigger guard. I was very happy with the result and the difference it made was amazing.
Here is a before and after picture of my Glock.
If you think this is something you would like to do to your Glock, I would suggest doing an on-line search or check out YouTube. There are many helpful tutorials out there that show step-by-step instructions. Don't be afraid...you can do it!