My all steel K9 has still been going strong. I believe I have over 1200 rounds in it and it's be chugging like a champ since about 75 rounds. during the break in period for the first 75 rounds, the slide occasionally didn't return to battery completely, but since about 75 rounds its been flawless. I mostly shoot Winchester White Box, Fiocchi, and Remington 124gr JHP rounds through my gun. It's accurate and reliable and my "go to" pistol. I like the fact that it's so compact yet accurate and easy to shoot.