The Vortex Venom is a mini reflex optic that uses the Docter/Noblex footprint. The Venom uses a single CR1632 battery which provides 150 to 3,000 hours of battery life. It has two adjustment settings for the brightness level: one is an auto-adjust setting, which adjusts the brightness of the reticle based on lighting conditions and has an auto-shutoff feature after 14 hours of use. There is also a manual brightness setting which allows you to change the brightness based on what you prefer and does not auto-shutoff. The Venom comes with a Picatinny mount in the box as well as all the tools you need in order to mount it onto whatever you're going to use your optic for. It has clear glass, a large viewing window, and Vortex gives you the option of buying a 3 MOA or 6 MOA Red Dot.
One of the best features of the Vortex Venom is that it has a top-loading battery compartment, which means you do not need to remove the optic in order to change out the battery. This is something that the Trijicon RMR suffers from. It's also a very inexpensive optic compared to some of its competitors.
This optic is definitely at home on top of a rifle or a shotgun. I actually personally prefer it on top of my Vortex Spitfire 5x Gen 2 prism scope, which has the mounting footprint right on top specifically for the Vortex Venom and, in all honesty, that's exactly how I plan on using mine.
So, make sure you check out the Vortex Venom if you're looking for a budget mini reflex sight that can do a lot for you while having an excellent warranty and of course the Vortex brand name behind it, which means you'll always get support if you ever have any issues.
--Magic Prepper