The Harris S-LMP Bipod Leg Notch Picatinny Rail Mount features legs that eject by spring action. Seven height settings from 9 to 13 inches. This bipod attaches to a picatinny rail mount. FeaturesExtends from 9" to 13"Direct attachment to a Picatinny Rail onlySwivels (tilts) to compensate for uneven terrain.Notched Legs are spring loaded for fast deployment.Ultralight weight - 13.5 ozHas a built-in sling swivel stud to attach the sling.Ideal for prone position or benchrest