It was indeed the slides that were cracking, around the locking lug area. They have to cut out the slides on the inside so the locking mechanism will work (which is in turn what makes the guns so bulky and top heavy). The DOD had a few examples that broke and caused the rear of the slide to fly off, though these were mostly French made slides which had poor metallurgy, and Beretta pistols made in the USA rather than Italy where the standards were different. Thus bore the 92FS, which is EXACTLY the same as the 92F, but the hammer pin is oversized on the right side, and a cut is made into the slide. This is the "slide retention device" that predator20 mentioned, just a bigger hammer pin and a cut. He's also right about the Brigadiers, they are just 92s with heavier, beefed up slides. Frames cracking is a myth and nothing else. I and no one else I've talked to has made reference to or talked about frames cracking. The slide deal is more common knowledge, though.
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