Actually the Beretta fiasco is far more complicated than most people are aware of.
The info I dug up which is referenced below along with my own study of the design of the M92 led me to the conclusion that Beretta was at fault and just because they won in court does not mean they were right either.
Faulty Weapon design, ammo usage, and faulty metallurgy all were part of this rather complex story.
The U.S. Military had stated they tested their ammo and "it was not" over spec. but when all was said and done the U,S. Military then "was forced" to "load down" below Nato Spec the future ammo being produced so they could "keep on" using the less than robust M92 pistol. The Military also demanded and got a redesign of not only the slide but also the frame which also was cracking.
The P38, from which the Beretta was designed was long known to have a weak slide design prone to cracking using ammo that was "not" over spec.
I dare say a gun like the Glock which has a massive slide would never have let loose like the Beretta slide did. And I have never been a big fan of Glock for a host of completely other reasons.
Below are 2 links and the Beretta story is far more complex than most people are aware of and "no" the conclusions by both sides still remain nebulous at best. But I give my nod to the U.S. Military's side of the story. Anyone even with a rudimentary mechanical knowledge when looking at the Beretta's original slide design would not have been surprised it did not hold up even if the metallurgy had not been suspect.
History of the adoption and woes of the Beretta M9 Pistol
sightm1911.com
Prior to the adoption of the Beretta M9, a U.S. military contract truly did seem an impossible goal for a foreign company in 1978, the year Congress issued its directive to the Dept. of Defense instructing it to search for a new 9 mm handgun to replace the M1911A1.
www.americanrifleman.org