In the recent February IDPA matches, I used two sets of magazines; Check-Mate's venerable dry-film magazines with tempered steel baseplates, which I've used as the primary magazines for my Beretta 92D since 2007. They included magazines produced in 12/2005, 1/2008, 7/20010, and 6/2015. These magazines have been properly treated on arrival (disassembled, with tube interiors, inner baseplates, followers and springs treated with Dri-Slide, a molybdenum disulfide dry film lubricant carried in a liquid carrier solution, which evaporates and leaves a film of lubricative and anti-corrosive on the components; tube exteriors and outer baseplates are treated with a light gun oil, currently Lucas Extreme Duty gun oil and wiped down before being placed in use).
These magazines have not been babied in use, but have been continuously maintained after each use. The have performed impeccably in my 17 years of continuous use, with only two issues as detailed earlier in the thread; a failure of the slide to lock back in one instance, arguably with an insufficiently firm grasp during a support-hand only stage of fire (and with fairly lightly loaded Federal Champion 115 gr cartridges-discussions with the tech at Federal/ATK strongly recommend subsequently using more powerful American Eagle, as the Champion load only chronoed at a 126 power factor...) and one magazine that didn't initially drop free-Check-Mate immediately resent it through their sizing die, and its performed faultlessly since).
I also have two 6/2015 production pieces that whose tubes were experimentally teflon coated by Check-Mate, which I use as my normal carry magazines.
Since Washington joined the growing list of states that ban new sales of high-capacity magazines, I decided several years ago that it would be prudent to get some Beretta 10-round 92 magazines (while Check-Mate has 10 round dry-film magazines catalogued, they're currently out of production), and obtained NIB three, two being US production pieces and one Italian; the only differences between the two types other than the rollmarkings is a slightly different baseplate retention stub in the inner baseplate component of the Italian production magazines; operation and disassembly is otherwise exactly the same. These are some of the better engineered and manufactured 10 round magazines that I've experienced, and they also have performed faultlessly (albeit in the rather limited use that I've subjected them two, as two were used for the first time in the recent matches, and the other had only been used as a "Barney" magazine in previous matches/training). They are easy to fully load and use, so if you need 10 round 92 magazines, these are the ones I'd recommend. Interestingly, only the Italian produced 10 rounder had the lower right side cut-out in the tube to allow for earlier 92S magazine releases.
Both sets of magazines performed without any drama whatsoever in the recent matches.
From left to right: Check-Mate teflon coated, Check-Mate dry-film finished, Italian-production Beretta 10 round (with additional 92S heel cut-out), US-production Beretta 10 round
Best, Jon