The Model 2 the all around size for the versatile shooter. The Model 2 is the most popular selling bipod in the Classic series. It can be used at the range hunting shooting prone and from many other surfaces. The legs have rubber feet that extend from 9 inches to 12 inches.? Rubber Feet? Classic Prone size? Rugged Design? Spring Loaded Legs? Great Value at an Excellent Price!Includes (1)Model 100 - One Universal Mounting Adapter (150-100)Detail :The Universal ? one adapter to rule them all. The Universal adapter will fit 95% of rifles and even a few handguns. For use with Uncle Mike?sA(R)- type Q.D. sling stud.