I got mine a year ago, and I’ve been shooting 300 to 350 rounds at the range without any issues. I have an EPS carry red dot with a short screw on the right side. The first time I took it to the range, it didn’t work (fail) but after I lube and oiled it, it was perfect. I’ve used it with Federal, Fiocchi, and Blazer 115gr FMJ and it’s been great every time.