Why does everyone have a Peq15?

Posted by Senior_Hovercraft_33@reddit | Firearms | View on Reddit | 17 comments

Ok stupid question but indulge me if you could please.
Why do I always see every person or video with a peq-15 or some other brand of IR/Illuminator laser on their AR?
Why is this so significant and necessary on a rifle like every single person is running night vision? I get it to some extent, but are there other reasons or any significance to buying a legit one?
I have a hard time justifying it when I’d rather just go buy a brand new thermal or do another 2 full build for that price.
I’m no stranger to throwing some pricey stuff on a build but I really don’t see the use unless you have NV unless their are other things its helpful with.
Be nice, spit some knowledge if you have any.