I was very glad to see this at SHOT SHOW because quite candidly CR123A are not often easy to find so having a Surefire Scout Light chambered in AA makes life much less complicated and gets us closer to that illusive concept of power source standardization. This new light by Surefire gets us closer. Same rugged build, superbly collimated beam and reliable tail cap switch makes for a great addition to your carbine. M.S.R.P. $299