Black glass-filled nylon. Mounts to bayonet lug. "Snap-n-lock" button folds legs forward down or rearward. 1-second leg extension or retraction from 9''-13''. Will not scratch rust or dent. Includes all hardware for installation without gunsmithing non-slip rubber feet. Allows use of sling. Wt.: 6oz.. Lifetime Warranty. Made in the USA.