There are plenty of things I’d love to throw on an M4 that would be fun to try out, lasers, grenades, IR, night vision ect.  but the reality is I really don’t need those, and with how much battery usage I would be using, I don’t really want to have to tack on another accessory that is gonna fail on me when I should really just operate with out it.    Battery life can vary depending on the type you use, but there have been big improvements in the last couple years.   The problem I see with people using lasers outside of their homes is that the laser is set for where the POI is at a fixed range and people that are less trained don’t realize that it’s not really going to improve your accuracy.

Rifle offset on the AR15 is something that needs to burn into a novice shooters head.  I can’t think of too many other firearms that have an offset like that and for close range fighting, especially in a hostage situation, you can easily miss your opponent and hot the wrong person.  Laser Grips Laser usage at close ranges, that are adjusted for POI within close ranges can be a help if you are using your home defense weapon, but for using lasers outside of your home, the bullet won’t hit where the laser dot is and is really just a guide.