Magpul Notched 6-9in Bipod

From the Amazon Listing

• Made of lightweight Mil-Spec hard anodized 6061 T-6 aluminum and Injection-molded polymer; Aesthetically pleasing, low-profile design conceals its mechanisms and hardware, smoothly brushing off snags and bumps
• Optimized for rapid one-handed adjustments; quickly and quietly transitions between countless user configurations
• Easily loaded with stabilizing forward tension without fear of failure or warping; At just over 11 ounces, the Magpul bipod is lighter than many pricier bipods currently on the market
• Spring-tension legs stow neatly forward and snap down and lock into place with one hand; Leg extensions slide and lock securely with the push of a button on any of the seven half-inch spaced locking detents
• An industry-exclusive 50 degrees of total tilt and 40 degrees of total pan are controlled by a glove-friendly knurled tool-less bipod locking knob located between the extended legs, allowing easy adjustment between shots