You should also check out Mhanlens B158 thread Brinyte B158 Flashlight GB- Ordering is a GO with coupon, all details in the OP! Updated: 12-09-15
Not running the T20 down or anything, it seems like another good light. I got one of the B158’s because the head screws off with the lens in place to change the pill, easy peasy… and It has a rail mount that comes with it to clamp to a weaver or picatinny rail. I will never use the rail, but the mount holes are interesting and could come in handy later for other mounting options (magnets, etc…)