Harris Bipods S-BRMP Sb RMP Made Of Steel/Aluminum With Black Anodized Finish, 6-9" Vertical Adjustment, Notched Legs, Rubber Feet, Picatinny Rail Attachment Harris bipods Clamp To Picatinny Rail Rifles, And Have a Sling Attachment Provision. Spring Loaded Folding legs Are quickly Adjustable For Height. Manufactured With Heat Treated Steel And Hard alloys, bipods Have a Black anodized Finish. Type Of Feet: Rubber Material: Steel/Aluminum Vertical Adjustment: 6-9" Weight: 13 Oz Attachment Type: Picatinny No. Of Legs: 2