Folks,
Many of your comments and this thread Itself belay a lack of knowledge for the intended functions and use of a stiker fire pistol... but being even slightly antagonistic (for those who were) to what you dont understand is ignorant at best. This is why so many people loved the RAP without the manual saftey...because they didnt understand how these guns were designed. I expect the "i never make a mistake" crowd to try and tell me why their need for a complete lack of anything blocking their firing pin is a must to live... but i echo what teuthis said above.... it is soound reason.
I digress... If you understood the design and (problem that design solved) of a striker fire pistol, you would understand the design of the trigger safety. The gun is designed to be carried safely in a "semi-cocked" status without the need for an external manual safety. Why? Because the multiple internal safety mechanisms are all controled by the trigger safety... successfully "turning off" all safeties in one singular motion at the time that firing is desired at vice versa, instantly. The trigger safety is designed to reduce surface area of the safety switch, as opposed to the internal safeties being turned off by the full trigger itself. This reduces the chances of something inadvertently catching the trigger and turning off all of the safeties as well. Why the need for internal safeties? Because the firearm is being carried half cocked... similar to carrying a 1911 half cocked. No one is on the 1911 forum arguing the need for a 1911 without its external safeties. Glock just made then internal. Why is it being carried half cocked? One because that is itself another safety mechanism versus full cocked and locked such as a single action pistol. And Because that is what gives it the ability to have the same trigger pull every time as opposed to a double action pistol.
Glock invented a safe single action (almost) pistol without the need for a second step manual safety. It solved a huge problem...especially for law enforcement who dont train enough for a firefight for their line of work. It is a safe point and shoot system without any second steps needed.
See the link below:
https://us.glock.com/technology/safe-action
That is why the rap wothout a manual safety or a grip safety is not the best idea. It is fully cocked and not really locked. Other companies have striker pistols that are fully cocked, but balance the loss of the semi-cocked "safety" of a Glock with a grip safety like a 1911... retaining the single shooter movement theory of Glock, but now with a true single action trigger pull. But law enforcement still hasnt bought too much into the fully cocked idea in part i believe because with a Glock, it is possible to get off a round or more with a limited, low, or poor grip that may otherwise not disemgage a grip safety.
But, because of theusis comment above, i wanted a Glock with an external manual safety... which is basically the SR series. If i could carry open like a police officer, i would carry a Glock (or maybe an XDm if i found that the difference in trigger pull eith a true si gle action actually made a difference). That is how it was designed to be carried. But, when messing around with cover garments for concealed carry, i needed something to safegaurd that fabric getting in the trigger safety. If they made a ccw Glock with a manual safety, I would look into it as a carry further... but that is basically the SR series. An XDm with a manual safety would be intersting too.