Ade Advanced Optics TCF88 Super Duty Tactical OP QD Bi-Pod, Leg Length 7.9"-12.7"/Height Height 8.0"-12.4" Can be mount on any rifle has a picatinny/Weaver rail, it can also be mounted any rifle that has a fore-end Sling swivel stud Durable aluminum construction and steel top platform; includes both Pica tinny and swivel stud mounts Foldable arms with spring tension Control, and include Posi-lock Wheel and quick retraction button Includes panning, Posi-lock, extendable/foldable legs, and Dual mounts; rubberized stand; 13.3-Ounce weight Handy, accuracy-enhancing accessory for your rifle with clever Dual mounting design