Streamlight 7a Flex Activate Constant Light?

I recently entered the WML world for my home defense FN 509 with Midway’s recent sale for the 7A Flex.I just installed it last night, but is there a way or button sequence to activate and keep the light on?Right now I press the switch on the back and the activate the light, but the light remains on only if I keep the switch pressed. via /r/CCW https://ift.tt/2MTZG4P