The most important part of the handgun is the GRIP. Holding the gun properly in the web of your hand will improve accuracy and stability with the handgun. Some semi-automatic guns, “Sig Sauer” for example, are high profile slides - meaning the back strap of the gun (grips) are much lower than the slide and therefore results in the wrist breaking after the shot is fired and the gun jumps upwards.
A Glock is a low profile slide and the back strap is closer to the slide putting more pressure of the shot in your hand not your wrist.
The same can be said about revolvers. If you hold your gun low on the back strap the pressure of the shot will kick the barrel up and again resulting in your wrist breaking.
The fingers, hands, arms and shoulders are full of joints that I call hinges. When you shoot a handgun all those hinges must be lock into place so the gun being fired will be stabilized long enough for the bullet to leave the barrel
1. The grip needs to be in the center web of you hand
2. High on the back strap (grip)
3. 90% tightness grip with you shooting hand
4. The support hand needs to be fingers on fingers 80% tightness grip around the grip fingers and thumbs locked forward on the frame of the same slide facing the target (autos)
Revolvers the support thumb locked over the web or the grip hand.
5. Follow through
If it feels wrong it’s RIGHT. This is my saying for those who have a hard time changing their grip. Remember handguns are built by the manufacture with mass production in mind. So you have to be careful in finding the proper handgun, caliber size of the gun, and proper grip that fits your hand. If you already have a gun that does not quit fit your hand there are companies who make replacement grips in rubber or wood, both can be custom fitted for your handgun.