They exhibited the following symptoms during the first training class:
-Feedway malfunctions with OEM Kimber TacPro mags - rounds would nose down into the frame below the feedramp
-Feedway malfunctions with quality aftermarket magazines. The feedramps were improperly dimensioned and all the guns came with the Kimpro finish on the feedramp so they became sticky with extended firing.
-Extractor tension failures - some of the extractors fell right out of the slides upon disassembly
-Slide stop problems - premature lockbacks, failure to lock back, or improper lockback such that seating a magazine caused the slide to drop. Most of the guns had .38/9mm slide stops with lobes so long that they struck the top round in the magazine. These guns were .45's.
-Rear sights falling out
When I got to the pistols at around 5-6000 rounds, we had some more problems:
-at least 2/3 of the pistols had loose plunger tubes that were held in primarily by the grips. The factory plunger tubes were MIM units which did not hold a stake very well.
-grip screws had come out with the bushings, as they were not staked or Loctited at the factory
-several had their barrel bushings break. These bushings were machined, and I have no idea why they went south.