Sniperhawglights.com Mounted under the barrel you'll see the outline of the shotgun barrel when mounted so it is similar to shooting in the daytime. Just point and shoot for me, no red dot.
Mount-
https://sniperhoglights.com/shotgun-rifle-barrel-mount/I leave the 38mm mounted under the barrel. I have a 66mm that will also fit under the barrel. However it does double duty around the house and gets mounted to the top of a rifle for longer range work. It wears their QD mount.
If I was starting over, I'd step up the Coyote Cannon. It takes different batteries so I'll stick with the 38LRX and 66LRX. I may add a second 66.
Ithaca 37 with 38mm Sniper Hawg Light. It's kept loaded with TSS #3 shot with 00 buck in reserve on the buttstock.