Sure have. My Detonics USA Combat Master is going on four months from the factory. As a CWP holder here in South Carolina and former instructor for the program, (when I retired, I retired) I have to have 100% function in my carry pistols. My CM completed a test I started years ago. I fire 500 rounds of ammo through the pistol, no malfunctions, I carry it. The CM was looking real ruff at about 400 rounds but it just kept on goin. At 500 rounds I just did not have the heart to abuse it any more. That little pistol is now my number one carry gun. By the way Jerry Ahern is the most available Top Guy at ANY company I have ever done business with. Great bunch of people.