Most likely almost everyone reading this who uses a battery-powered optical sight has had the battery die at some point while shooting a rifle or carbine. I say "almost" because I know a few of you are assiduous enough that you change your batteries at regular intervals to avoid this problem. I'm semi-assiduous, as I try to change my batteries at regular intervals but sometimes forget. In any case, if you use optical sights on your M4 or other combat carbine, I highly recommend that a set of BUIS (Back-Up Iron Sights) be installed. I use Trijicon, ELCAN, EOTech, and Aimpoint optical sights because I test a lot of carbines and like to stay familiar with the optical sights I'm likely to encounter.
展开▼
