"The Harris HBLS Adjustable Bipod provides a steady shooting rest in all types of terrain, for accurate, long-range shooting. The HBLS Harris bipod utilizes smooth legs, allowing numerous height adjustments.. Telescopic legs have spring-loaded retraction to fold legs under barrel when carrying the rifle. A tilting or swiveling base head aids in following moving game or to compensate for uneven ground. The Harris HBLS Adjustable Bipod attaches and detaches easily from the stock's front QD swivel stud, or with a sling stud adapter on a Picatinny rail. An added swivel stud on the bipod allows you to attach a sling for carry. Made of black anodized aluminum alloy with some steel parts, and hard rubber leg caps. Steadies rifle for accurate, long-range shooting Quickly adjusts for height from 9""13"" Easily attaches the front QD swivel stud Added swivel stud for sling carry Spring-loaded, folding legs Constructed of aluminum Swivel/tilting head"