I think we have all had a moment when we wished we could upgrade one of our lights without buying a completely new torch. Olight has obviously thought of the same thing since they now provide us with optional drop in modules.
The M20S XM-L drop in module allows you to quickly replace the LED module in your M20 giving you more overall output. At just under 40 dollars this is a super economical way to get much improved performance over the old XP-G LED. Installation is simple, but if you have any trouble you can refer to the video below to get it figured out.