Having an Instant On laser on a defensive handgun makes using a laser as an aiming device significantly more efficient. Traditionally, you need to perform an extra step to activate any laser technology, or ensure that your grip engages a switch. While it has always been an option to simply leave your laser on while holstered, the risk of running your batteries down and the fact that many holsters are open bottom precludes this from being a practical option. Viridian lights and lasers can be combined with holsters that have the Enhanced Combat Readiness (“ECR”) to give you Instant On usefulness without any of the negatives of simply leaving a laser on all the time while the gun is holstered. Laser Technology can be integrated into almost any holster and is already being offered by some of the leading companies in the industry.