Ultimate Arms Gear Pro Series Tactical Foldable & Height Adjustable Bipod With Dual Mounting Weaver Picatinny Rail Mount & Swivel Stud Mount Designed and constructed for tactical shooting and combat. Constructed of supremely durable aircraft aluminum with a steel top mount platform. Weighs just 12.2 oz (14.4oz with the swivel stud mount attached). The dual mounting design includes both a 7/8" Weaver-Picatinny attachment point and a swivel stud mount to accommodate almost every type of rifle. Both of the legs are fully adjustable for height for position optimizing, have stabalizing non slip rubberized feet, retract instantly with the quick retraction buttons or lock in at a specific height with position locking wheel to prevent tipping. The legs fold & securely lock out of the way with spring tension when not in use. Center Height Adjustment: 6.1" to 7.9" ; Leg Length Extendable from 5.5" to 7.4"