Black MOE AFG2.

Amazon.com: UTG Low-Profile Deluxe Universal Picatinny & Swivel-Stud Bipod: Sports & Outdoors@@AMEPARAM@@http://ecx.images-amazon.com/images/I/41lc0Qurd-L.@@AMEPARAM@@41lc0Qurd-L

I like this bipod once I loctite'd the mount to the bipod. Before the loctite, it was loosening from the recoil of the 15-22. Now it stays put even on the -15. It is high enough for bench shooting with the 25rd magazines and even the 32rd promag magazines (although it won't freestand with the magazines in). I'm sure that the $100 bipods work great and everything, but this gets the job done for me.

I also have a Amazon.com : Military Law Enforcement Steel Inserted Leg Mil Spec Polymer Composite Grip+Bipod+side Rail : Gun Grips : Sports & Outdoors@@AMEPARAM@@http://ecx.images-amazon.com/images/I/31OekHzEtvL.@@AMEPARAM@@31OekHzEtvL but I don't like the VFG and the bipod isn't high enough for bench shooting with the 25rd magazines