Harris bipods clamp to picatinny rail rifles, and have a sling attachment provision. Spring loaded self-leveling folding legs are quickly adjustable for height. Manufactured with heat treated steel and hard alloys, bipods have a black anodized finish. Series L Weight 15 oz Material Steel/Aluminum No. Of Legs 2 Type Of Feet Rubber Attachment Type Picatinny Vertical Adjustment 9-13"