Each year, Ruger introduces a new configuration of 22/45 pistol. For 2016 it’s an OD Green model with a ventilated barrel shroud—an attractive and lightweight addition to the 22/45 line.

I overcame my reluctance to shoot these guns in 2012 when Ruger launched the Mark III 22/45 Lite. This model employs an aluminum receiver that shaves 10 ozs. off of the pistol's already reduced ...