My BUG rotation consists of a Kahr MK40, Para P10, Kahr K9, and S&W 640 and, on occasion, the Glock 19. This battery may be a little “heavy” for some; however, I made decisions long ago to be as well-armed as possible. The concept being that if and when you need to have someone help defend you and your loved-ones, that individual must be equally armed with the use of your BUG. Redundancy not, necessarily, duality.
Is your BackUp Gun able to function as a primary firearm?