Leapers, Inc. - UTG Tactical Op Bipod, Fits Picatinny Rail or Swivel Stud, 6.1 - 7.9, SWAT/ Combat Profile with Adjustable Height, Black TL-BP78 Designed for tactical shooting" these bipods are constructed of high tech durable aluminum with steel top platforms. The dual mounting design includes both a Picatinny and swivel stud mount to accommodate almost every type of rifle. The legs are fully adjustable for height" have non slip rubber feet" retract instantly with the quick retraction buttons" and lock out of the way with spring tension when not in use.