I figure if there was anything really wrong with the Glock platform, there are enough police forces as well as civilians who own and use them that it would have come to light long ago.
The flaws manifested themselves quickly, but corporate propaganda can be just as effective as political propaganda, especially when combined with money and a wise product placement strategy.
Flaw #1 -- the short, DAO light trigger. It can be partially mitigated by installing a NY trigger, and by rewriting Jeff Cooper's third rule of gun safety from:
Keep your finger off the trigger till your sights are on the target.
to:
Keep your finger off the trigger till you are ready to fire.
.
The Glock is the only modern firearm I know that has required gun safety be modified to make the gun seem safe.
Flaw #2 -- absence of an affirmative external safety. This can be mitigated by installing an aftermarket thumb or trigger crossbolt safety.
Flaw #3 -- the need to pull the trigger to field strip the gun. Oops! This violates even the rewrite of Cooper Rule #3, a clear design flaw. The only way I know of mitigating this flaw is through training.
I'm not characterizing Glocks as unsafe, merely less safe that other viable options on the market. I do think it ever bodes well when my brothers in the gun fraternity trivialize the importance of gun safety.
I think a federal law is needed requiring Glock carriers to wear a yellow, diamond-shaped caution sign, front, back, left, and right, that clearly says "Glock on Board," so those of us who wish to avoid being ND backstops can give such folks a wide berth.