I'm not finding any rail mounts on their website. How are they mounted? With a gopro rail?https://shop.runcam.com/runcam2-airsoft-version/
Runcam finally caught up to the market demand and started selling their camera with some decent lenses. The direct price is lower than the Novi/BE kits as well.
Check the difference between the 35/50mm lenses on YouTube to find the zoom that would best fit your setup.