Features: Extends from 6" to 9" Direct attachment to a Picatinny Rail only Swivels (tilts) to compensate for uneven terrain Notched Legs are spring loaded for fast deployment (What's this?) Ultralight weight - 13 oz Has a built-in sling swivel stud to attach the sling Most useful for shooting off the bench 100% Made in the USA Material: Heat treated steel and hard alloys Hard Rubber Leg Caps Polymer knob Finish: Anodized Black Mfg: Harris