Weight may be very important in choosing a defensive pistol, but other matters must also be considered. Size is important, as is simplicity of operation. Also, factor in reliability in functioning and adequate power for the job. Kahrs are built to address these areas.
At this point, we need to take a quick look at the basic Kahr design before we go on to the trio of .45 ACP pistols. They all look very much alike and handle in the same way. The major differences involve size and weight due to caliber and intended mode of carry. There are a couple of sight options, including the excellent Novaks, but the lockwork of the most recent model is essentially the same as that first pistol of the 1990s.
Kahrs use a simple double-action-only (DAO) system of operation, where the same short, light trigger pressure through an arc performs the twin functions of fully cocking the striker and releasing it to fire. With such a system, it is safe to carry the pistol with a round in the chamber. And since there is no need for a manual safety, none is provided. Internal safeties help keep the gun from firing should it be dropped.