Sierra 7 Bipod, 7-9in w/ Raptor Feet, Matte Black Suitable for ALL calibers up to, and including .50 Cal BMG. 90 "Panning Action", and 60 "Canting Action" with complete control. Panning action incorporates needle bearings for the smoothest panning ever seen in a bipod. Designed in conjunction with competitive shooters, and Top-level US Army Snipers Built to last for generations, and backed by our Limited Lifetime Warranty