I have a Olight Odin Mini on mine, had to buy the picatinny mount separately as it comes with an mlok mount. It's ok, I could only mount it on the right side of the fore end due to light/mount clearance issues with the stock and obviously the remote switch can't be used so I have to use the tail cap switch which is moderately awkward but doable. I have the Magpul backpacker stock on order, I'd imagine with the mlok slots on each side of the fore end I should be able to mount it better and likely use the remote switch as well, hopingbthe stock arrives soon.