Where to start?
The SIG was not the "best" pistol in the M9 trials, though some liked it best, and still do. The Beretta was twice as reliable as the SIG for example, and the frames lasted longer. If cracked frames between 5000 and 10,000 rounds had counted (they did not), the SIG would have failed the M9 trials. Both met the minimum requirements though, and after the "funny bidness", Beretta had the contract. In the M10 trials, the Beretta did as well as the SIG, but SIG kept their low bid this time; we didn't need any new bases in Italy in 92.
A block will crack (not break). If you have half a brain, you will notice during cleaning. Jams are a good tip off. If you continue to fire w a cracked block long enough, and the block doesn't break, the slide will. If the slide cracked, and you didn't notice it, keep putting blocks in it, eventually that slide will break, maybe even with a good block in it. Since this rarely happens under the 5000 round contract specified service life, Uncle Sam doesn't have much to bitch about? Shoulda asked for more? But if they had, the SIG woulda failed (cracked frames between 5-10K remember?), and we still woulda got the Beretta, since none broke during the trials. Life's a beach?
At "normal usage rates" that 5000 rounds is good for 40 yrs BTW (though some do that in a week or two; I have). Since they bought 450,000 of them, the M9 will be around for a little while?
Ammo? The problem was some of the good old GI ball was way over pressure, some wasn't, and the Army didn't have a clue which was which (still might not?

). They were sure it wasn't the ammo, until they found out their testing procedure for ammo was wrong. oops. Since some guns broke at 2000 rounds, some over 20,000, and some fired over 75,000 without a problem, something is/was screwy somewhere, don't ya think? <G>
I've been issued the M9, M11, M15 (38 revolver), M1911A1. Have even used BHPS, CZs and P7s. I like the M9 and M11 the best of the bunch (the M11 over the M9 BTW). Saw the most jams with the M1911A1, and the most broken minor parts too (bushings, links, firing pin stops, etc). We see what we want to see?
Have no idea why the M9 doesn't have a dual designation (it doesn't), or the SIG wasn't called the M10. Ask some admin/contract weenie.
The M9 has had fewer broken slides than the Glock 40/45s have had kBs BTW. I carried one on and off for 11 yrs, saw millions of rounds total go through thousands of pistols and never saw a slide break. Have seen several blown up Glocks though. I don't mean case failures, I mean ruptured "Banana Split" barrels/chambers, cracked frames/slides. Still trust both of of them too.

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[This message has been edited by BrokenArrow (edited January 14, 2000).]