I almost hate to say it, and don't have any experience with the x47 in them but for a .260 the magpul AICS style mags run better than any metal mag I have currently.
Could I perhaps get in line for this? I just got notification that my barrel should be done in the next week or two. I could try to con one of my machinist buddies into rigging something up for the handle.
I use a nitecore nu25. It's rechargeable. Small, bright, super light. I don't use it daily so can't really speak to longevity
ETA: Also has a red light with high and low function if you have a need for it