“Costa RVET Course AAR,” a full-length after action report on Costa’s Low Light Course in Wyoming in which the SwitchBack Flashlight Ring was featured, at Soldier Systems on June 25, 2014:

Soldier Systems RVETAAR“[Costa introduced] the “flashlight-forward” SwitchBack Technique. Costa demonstrated how the SwitchBack Technique can encourage a more natural, modified isosceles stance and allows the flashlight to be toggled on and off similar to a weapon-light. In contrast, older techniques like the Harries require shooters to break their support arm downward and twist their body out of the generally advantageous “plates forward” isosceles stance. It’s a non-issue though, as all techniques work with the SwitchBack. The polymer ring aligns with a traditional flashlight grip regardless.”