Before I even ordered the product I had sent an email to ask a question. I was very surprised that I received a response right away.
The mag extension (.100), was stupid easy to install. It took me longer to gather the few tools than it did to install it! I will also add that I inserted a several mags and banged the weapon around to see if the mag would remain in the weapon and had no issues with several type mags.
I will also note, there are several videos on installation but it is really very easy. With the weapon unloaded, lock the slide to the rear. With a small punch on the right side of the weapon slowly drive the pin to the left. I held the weapon down with my left hand putting one finger into the mag well and holding the punch between two fingers. It is awkward but easy, as you drive the pin through you will feel the mag release pop out just a bit inside the mag well. I then pushed the factory mag button slowly from right to left and it moved into the hand grip, at that point I followed it through with the new mag release. The detent portion should be facing the trigger guard. At that point I flipped the weapon over and while holding the mag release in, from the inside of the mag well, tapped the pin back into it's original position. It was really that easy.
The new release does not protrude very much and I have not been able to push it by accident. I think I may even go with the .150 to make it even easier with gloves. The days of rotating my grip to drop a mag are over.