Mike S wrote: ↑Mon Aug 07, 2023 9:10 pm Well, it turns out that the glass had actually shifted a little bit within the housing of the Viper RDS, which in turn pushed the red dot askew resulting in the drastic shift in POI. I'm glad the Vortex Rep who called me actually took the time to look it over while we were on the phone, because the guys in the shop thought it was just zeroed way off.
I had been doing alot of one-handed shooting in the 6 months prior to the zero shift, racking the slide (by using the optic) against the holster, belt, pocket, jeans, etc, so I'm thinking that's what did it in.
Good news is that I asked them to replace it with the Defender-CCW, their newest RDS, & they did. Both RDS' are listed at the same MSRP, but supposedly the Defender-CCW is built more solid (and, the battery is top-loading so no need to remove the RDS to change batteries).
