The Offset Flashlight Mount Surefire Scout was my first introduction to Low-Pro Products (all the way back before they were Low-Pro Products) and it remains my favorite. The mount has seen a couple of very important updates since my original introduction to it and I have found new ways to use it.
I’ll cover the new way I use it first. These mounts have a unique way of interfacing with the rail. They use a tension screw that sits in the cross slot and tensions the mount against the angled underside of the rail. This system is secure, strong, and forgiving of various rail specs. In fact, it is so forgiving that it can even be mounted on Weaver rails which is why I use one to attach a Streamlight ProTac Rail Mount Light to an XS Sight Systems Lever Scout Mount (image below).
AMS Machine, who produces the Low-Pro Products line, has updated the mount in two ways over the years. The newest versions of the mount have 2 tension screws instead of just 1 on the original mounts. They have also introduced 2 adapters that expand the capabilities of the mount. The Millennium Adapter Plate bolts onto the Offset Flashlight Mount Surefire Scout to allow it to accept Surefire Millennium series lights and the Scout Extension Bar allows both Scout and Millennium series lights to be cantilevered forward of the mount.