once you train with it, it becomes as natural as any other sighting system...if you leave it on, then you wouldn't have to worry about it not being on when you need it...and as they lose their illumination slowly...you'll know well ahead of time that you should change the battery...or change it once a year...
****G17**G21 Gen4**G26 Gen4**G30S****
*NRA BENEFACTOR MEMBER/LEAA LIFE MEMBER*
*Like What You've Got?...Thank a Vet!*