I put one on my Marlin 336C .35 Remington (3 x 9 x 44) using Weaver Dovetail mounts.Have had it for about a month.Sighted in (7 shots) for 25,50,then set at 104 yrds(104 is where the bench rest is at ,so says my Bushnell laser rangefinder
.Have shot 2 other times over the past 2 weekends and sight is still true.So so for so good.Guess only time will tell if it holds up,but Iam plesed with it so far.I can group in the orange bull shot after shot from the bench,so that's good enough for me.....Rick