Here is a Great test by the NRA’s American Rifleman publication of the new SigSauer M17. Nagel’s currently has these on Sale:
Anyone who’s served in the U.S. military within the last 35 years or so should be familiar with the M16 rifle and the M9 pistol. Both are a standard for the American serviceman and both have worked well, albeit with some refinements along the way. It appears, for now at least, that the M16 will continue to serve on into to the future, but the Beretta M9’s time in service will soon be ending.
So what was wrong with the M9 and why was it replaced? Pistol training and technology has changed quite a bit since the 1980s when the M9 was adopted. Striker-fired pistols, uncommon 30 years ago, have become the norm, and for good reason. The striker system is generally more sealed with no exposed hammer slot that allows dirt and debris into the action. Without the hammer and related hammer strut and spring, the grip circumference can be reduced, thereby accommodating shooters with smaller hands