Features:Extends from 9 to 13Direct attachment to aPicatinny Rail onlySwivels(tilts) to compensate for uneven terrain.Quick Deploy spring loaded self-leveling legs.(Whats this?)Ultralight weight 14 ozHas a built-in sling swivel stud to attach the sling.Ideal for prone position or benchrest100% Made in the USA.Material:Heat treated steel and hard alloysHard Rubber Leg CapsPolymer knobFinish:Anodized Black