Go to the ludicous lumens site and buy yourself a NS68-IC light in red led...its good for 250+ yards for foxes....Speak to Andy and he will sort you out with mounts batterys etc....when you've shot your first fox you can pm me and thank me....Hugh
edit...the ns68 replaced a night master nm 800 which just didnt cut the mustard compared to the ns68....
2nd edit the light is mounted on a s and b 8x56....