Ultra-light Harris Bipods are lightning quick and quality manufactured with heat treated steel and hard alloys. The bipods are quick-detachable and clamp to the QD sling swivel stud of bolt action rifles with a conventional stock design. Carrying your rifle with a sling or shooting off-hand is not impeded by the use of a Harris Bipod. Hinged bases have tension adjustment to eliminate tremor or looseness in the crotch area of the bipod. These bipods have an all-weather black anodized finish. Method of Attachment: Attaches to sling swivel stud. A sling swivel can be mounted to the bipod's swivel stud clamp. 6-9"