Primos Bipod,
With just one hand and the pull of a trigger, you can adjust the Primos Trigger Stick to your desired height. The Trigger Stick is a lightweight height-adjustable gun rest and optical gear mount, perfect for kneeling or standing. It comes equipped with a detachable V yoke. The...
i find a $9.99 Rifle bipod free shipping on amazon
I have this attached to my Ruger AR-556 rifle. It is adjustable from 6 to 9 inches long. The bipod legs fold up and are spring loaded. The feet are rubber for a good support. I took it to the range and it is pretty sturdy for a budget bipod...