RIBZ stands for Revised Improved Battlesight Zero. It’s a method of adjusting standard military carry handle sights to allow a wider range of zeroes. This leverages one of the primary benefits of the adjustable sights over fixed sights. This guide shows you how to implement RIBZ.
One of the great mysteries of the modern AR-15 is the so-called Government profile barrel. The original AR-15, and M16, had the so-called “standard” profile. Today, we call this a “pencil” profile. When the design work for the M16A2 happened in the 80’s, the design team shifted away from the lightweight style. The thicker barrel at the muzzle became the new standard. Eventually, all modern enthusiasts ask why that happened.
Not a lot of people know the SpecterOS 4x. You’ve probably heard of its heavier and more expensive sibling, the SpecterDR, though. The SpecterOS is the same optic, but fixed at 4x. It is lighter, with similar illumination, but it is more akin to the ACOG than a 1-4x scope. I really like this optic, as it has outstanding glass quality and an attractive look. But I’m not crazy about the mount.