Harris Engineering's Ultra-Light Three Piece 12""-25"" Sling Swivel Mount Fixed Bipod is manufactured with heat treated steel and hard alloys. It clamps to the Q.D. stud of most bolt action rifles that have a conventional stock design. Carrying your rifle with a sling or shooting off-hand is not impeded by the use of a Harris Bipod. Folding legs have completely adjustable spring-return extensions.