Mate all the torches that are any good seem to be 25mm body.
This accepts most torch mounting systems.
Two I use that will reach as far as you can shoot with a centrefire, are pictured below.
All are 25mm body, so fit standard mounts and even, modified scope mount set-ups.
I know I recommend Cleavers a lot, but the Nitecore brand they sell is pretty much as cheap as you can get them and they send to your door in a few days.
Olight and Nitecore are equivalent I reckon in power for size and features.
Look up Nitecore on the search function at the online Cleavers site.
All come with batteries and USB-C charging cables.
First two are from left, the new and older Olight Javelot, insanely bright, very long beams, as long as you can get. But longer in the body and a bit heavier, because of the huge batteries inside.
The next ones are Nitecore.
The shorter ones, the P30 (the short one with the fat lens) has as much reach as the Olight Javelot, it's incredible.
The smallest one on the far right is the MH27, which I use on an autoloading 308 walking the crops. Even that will reach out as far as I can hold.
All those come in kits, in pelican type cases, with mounts, separate cable switches etc. I don't use all that stuff, I prefer to just use my left hand to thumb on the torches with the end-cap button, with the torch on the forend. Hence the extra mounts you see clamped to them.
Mounting them on the scope needs three arms, which I don't have.
All of these are awesome and I can't believe how incredibly bright they are. The new Javelot is actually has the reach of the big-name HID 10" shooting spotty on my ute.

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