My Romeo 3 Max is a year old, with 3000 to 5000 rounds through it. It was factory mounted to my SIG P320 Max pistol. About two months ago I noticed that the pistol was shooting 4 to 6 inches low and a few inches left at 15 yards. I had read about the wandering zero problems with the Romeo 3s and figured that the elevation screw had moved. I re-zeroed the optic, shot a match and all seemed fine. The following week, about 200 rounds later, I was shooting very low, again. I adjusted the elevation screw for max elevation and the gun still shot 4 to 6 inches’ low at 15 yards. Previous to this, the gun had always shot to the point of aim with a variety of ammunition.
I contacted SIG and was immediately emailed a return authorization with a payed Fed Ex shipping label. I boxed up the sight and mailed on a Thursday (22 SEP 22). The following Tuesday (27 SEP 22) I received a notification that a package was enroute from SIG. After some Fed Ex shenanigans, I received a new Romeo 3 from SIG, free of charge, on 4 OCT 22. The invoice states that the inability to zero was confirmed and that the optic had a loose lens.