Atlas BT10LW17 Bipod with ADM 170-S-TAC-R Lever Material: T6061 Aluminum Mounts Directly to any 1913 Style Picatinny Rail via Included ADM 170-S-TAC-R Tactical Lever Height Range Approximately 4.75 - 9.0" Weight 12.7 Oz Made in the U.S.A.