Troy"s Bravo rail is a one piece free floating quad rail design that utilizes the existing barrel nut and revolutionary tri-clamp system. This easy to install, one-piece free float hand guard offers unlimited mounting solutions with four full-length true U.S. MIL-SPEC 1913 Picatinny rails, breakthrough tri-clamp locking system, enhanced accuracy and reduced heat transfer. Machined from aircraft aluminum and finished in MIL-SPEC Type III hard coat anodized with Teflon.Made in the USA