I had 2 of them. Mounted one on a muzzleloader and one on a 12 guage slug gun. Both failed on me after a few years. I assume it was the heavy recoil (at the time I was bein a knuckehead with my ML and shooting it with a max load). Up until then, I had no complaints with them. Might hold up fine on something that doesn't kick as bad & maybe I just was unlucky.