You know that’s not a bad idea having a flashlight even without the gun. The new 272 lumen’s Mini Maglite Led Pro flashlights are blinding.
These are really cheap:
http://www.amazon.com/gp/product/B00T96T13S?psc=1&redirect=true&ref_=oh_aui_detailpage_o08_s00
I always carry one with me everywhere as part of my EDC.