Features: Extends from 9" to 13" Direct attachment to a Picatinny Rail only Swivels (tilts) to compensate for uneven terrain. Quick Deploy spring loaded self-leveling legs. Ultralight weight - 14 oz Has a built-in sling swivel stud to attach the sling. Ideal for prone position or benchrest 100% Made in the USA. Material: Heat treated steel and hard alloys Hard Rubber Leg Caps Polymer knob Finish: Anodized Black Mfg: Harris