Champion Targets Rock Mount Adjustable BiPod 6-9 Inches 40854 requires no assembly, and is compact and lightweight. This Champion Targets Bipod extends easily and quickly with adjustableimage heights. The Champion Rock Mount Bipod 6-9" easily attaches to sling swivel stud, and features telescoping legs with a spring return.Compact and lightweight Spring-return telescoping legsEasily attach to sling swivel stud Quickly adjust to heights from 6" to 9"Steady shooting from both sitting and kneeling positionsFold out of the way when out of use