Reddit mentions of UTG Universal Single-rail Rifle Barrel Mount, 2 Slots

so that scope is way way to high. if it is more comfortable like that than a lower mount, its because you arent using correct form in some way shape or form. the bottom of the objective(front) bell should be as close to the gun as possible. there should be no need for an offset mount on the gun. move your head forward much much more in order to get a good cheek weld.

youll get a lot of crap here for the weird flashlight setup, but most of these people here generally have no clue what the hell they are talking about.

personally i would get a barrel mount for the flashlight. will keep the profile of the gun way slimmer and aid in the packability of the gun. its also way easier to turn on from the shooting position. ill try and snap a photo of my setup. these are the parts i used

https://smile.amazon.com/gp/product/B00571UP66/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

https://smile.amazon.com/gp/product/B001WJ4DGA/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

with a convoy c8 it fits perfectly with the 2 stock pieces locked together.

You can try one of these. Since you're mounting a light, it doesn't need to hold zero, so this is probably a good choice for you. Alternatively you could try adding a rail section to the stock handguards (probably the upper for a light), but that would require some drilling and permanent modification.

I don't know if they are useful or not, but I've seen clamp-on rails for barrels, like this(first result on google).