I agree with everything Godan has said, plus the glock slide sits lower over the hand then any other handgun giving it a very "point your finger" natural aim. It also makes the bore axis more centered so it has less muzzle flip than an brand with a high bore axis such as the XD and Sig.
Originally Posted by Godan
Being an LEO, I have pretty much done all handgun training exclusively with the glock pistols. I own the model 19 in 9mm, the model 23 in .40, the model 30 in .45. I also have a Glock model 32 barrel in .357 Sig. I can take the .357 Sig barrel and switch it out with the barrel in the model 23, using the same magazines and convert my .40 into a .357 in a matter of seconds.
-Rob / Shower Shaver / Bootlegger's Research Institute / Red Dirt Shaving Society