Harris Engineering Bipod, Rotating, 12-25, Black S-25 Harris Engineering's Ultra-Light 12"-25" Rotating 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 (Except for Model BRM and LM).