Brand new from Surefire bought a DS-SR07 tapeswitch. Old Click tailcap that came with the light functions fine. New one when screwed on is not functioning. Is there any sort of lock out feature built into these that I have not figured out?
I can not see a brand new one from Surefire being defective but anything is possible. Light is a M300V.
Picture is tapeswitch on left and original click cap on the right. Video is a short view of it working with one and not the other.