V1: Run a ΒΌ-20 or M6 tap through the hole in the clamp. Slide the clamp onto the rail of the main body, and insert a screw at least 5/8" or 14mm long to secure the clamp in place.
V2: Loop a rubber band through each hole on the main body, and hook the ends on the sliding clamp
The author marked this model as their own original creation.