I am a Glock Armorer. I carry one on duty and off duty.
The Safety issue-All safeties are internal-It is designed to function like a revolver-pull and shoot. The internal safeties prevent it from being fired unless the trigger is pulled. There are a lot of horror stories concerning discharges that appear out of nowhwere. Later investigation shows the trigger was pulled somehow-putting it in the wrong holster, finger in the trigger, even putting it in the provided box with a round in the chamber (The old boxes had post in the middle that required the trigger to the rear for storage)
Following the four rules of weapon safety pretty much eliminates the above
KaBooms-the design leaves a small portion of the case head unsupported in the chamber. Not a problem with proper factory ammo-most KaBooms are found to be reloaded ammo. The ammo has brass that has been re-loaded (which means stressed/Stretched) up to 10 times (Often at the high end of the charge table). The repeated resizing weakens the brass, causing a point of failure. This is evident on the 40 cal for two reasons-one is the pressure generated by the round and the tolerances needed in the Overall length. Seating the bullet wrong can double pressures.
Avoid steel cased ammo like Wolf-it brings a whole nother set of problems to the KaBoom table
The other reason is the prevalence of the Glock and 40 cal in Law Enforcement-simple math-That many agencies/people shooting the same weapon/caliber combination will make the problem look worse than it is.
The above being said-I have over 10, 000 reloads through my Glocks (.40's) -no problems. After 3-5 loads-the brass lays-I don't pick it up. I always stay at the midrange of the charge table and the moderate pressures there.
Reloads do void the warranty-but if you look at other makes of weapon (Kimber etc.) they put it in the owners manual too-standard liability disclaimer these days.
The Glock is a solid, reliable weapon that requires the same care and safety sense of all other firearms. Lots of horror stories, but it started with a horror story. When it was introduced to the US market-It was the "Plastic Terrorist gun that could pass undetected through Airport metal detectors." A quick check of the facts showed how goofy that was.
Full disclosure-I enjoy shooting my Para Ord full size 1911 more
Hmmm... I wonder if I have some of that...
Why is steel cased ammo bad in that gun?