OK - here is my considered opinion based on as much information as I have been able to find over the years. I'm prepared to be proven wrong with facts, not second hand rumors. The only Beretta 92's to have documentable cracked slides were ones that the SEALS used an excessive amount of proof loads in after they were issued the pistols. Many thousands of rounds in several pistols. Would have damaged any pistol. No Beretta slides cracked during the tests for which pistol would be the new armed forces issue. Those pistols were fired 10's of thousands of rounds apiece with standard NATO issue ball ammo which is pretty hot stuff and came through with flying colors. Twice. Beretta added the slide retention device (making the 92F the 92FS) more for public relations than necessity. There hasn't ever been a documented case of a civilian 92F or 92FS slide seperation. Locking blocks, sure. They've been redesigned and I think most failures there were due to owner inattention to proper lubrication. You've got to lube the locking blocks just like other metal-to-metal parts of any pistol. However some people never let a good story die and as new generations of shooters kept hearing how "Beretta slides are prone to breaking" Beretta produced the Brigadier so that those that liked the pistol but had reservations about the strength would have something to feel comfortable with. I'm sure the heavier slide makes the pistol a softer shooter but the 92FS's I've had shoot just fine. I know there are other improvements to the Brigadier and more power to owners of a fine pistol. I'm just sick and tired of hearing this slide cracking BS tossed out there so casually. I've heard from coworkers about seeing it happen in person and after trying to get specifics they can't remember who the shooter was or what really happened or what day it was, etc. If I'm wrong hit me with the facts. I consider the Beretta 92F one of the all time most dependable, and if not abused, rugged handguns ever invented. Lube it right and if you're going to shoot +P ammo in it put in a stronger recoil spring and magazine springs. The Wolff trigger spring assembley looks like a good idea but probably isn't necessary for the average guy who won't shoot 10,000 rounds out of any one pistol in a lifetime. BTW, I own Kimber, Kahr, Glock, Beretta, Browning, S&W and Ruger pistols. They're all great in their own way. I don't have anything that's not reliable. Cheers.