Not really sure how many rounds as I don't keep track, but I do shoot a lot. Mine has never seen a single factory round, all my reloads, and no malfunctions feeding or firing, did have one failure to return to battery when the slide cover slid down, but otherwise it just runs. Doesn't matter if its clean or dirty, dry or well lubed, it just runs. If I had to guess I'm sure I'm over 2k rounds.