After seeing the 'ND' on a buds rifle i was tempted , but at £300 it would have to be something special, & could not justify the cost .I looked around at other options & after some home work looking at various led torches & lasers, i bought a 900 lumen , adjustable torch that mounts well to a scope gives a wide beam for spotting, & zooms to 10ft square @ 200yard. Various mounts are available , & with a wingnut & a little modifying these are practical & superb, for on/off & adjustment beam. The rechargable batteries on the torch give ................10hours !! co