Good, inexpensive tool. - Caldwell Pistol Zero Shooting Rest

This is a very inexpensive shooting rest, but sufficient to sight in most handguns. The adjustments are very well thought out. You align the front/rear distance by moving the back rest to an appropriate slot. Put the gun in the front cradle, and dial up the height you need to get on target. It holds the gun in place very well. It is made of very light weight injection molded plastic and will move around during each shot, but for $20 it's a great rest. You could probably stabilize this thing by stuffing some lead weights or sand bags in the hollow cavity underneath.