The L7 is an 8AX body with KL7 bezel.
The KL7 bezel fits and functions on both the 8AX and 8NX no worries.
I understand that the KL7 also fits and functions on the Classic 8X as well but I've not seen this confirmed.
SureFire revised the lumen output ratings of a number of their LED products following their testing of a large number of production units using correctly calibrated measuring equipment. Previously these ratings were based on conservative approximations following testing using measuring equipment calibrated for incandescent light because there was no time to get a better quality rating prior to the publishing of the catalogues before SHOT Show.
SureFire are confident that their new (current) rating is more representative of production units.
see the starting idea here: https://www.candlepowerforums.com/threads/169311but possibly more work than I planned on doing. This is my primary duty light so I don't want to be without it for long. .