One-piece, freefloating hand-guard has four full-length mil-spec M1913 Picatinny rails for a full range of mounting options. It also offers enhanced accuracy and reduced heat transfer. Machined from T6 aircraft aluminum and finished in mil-spec type-III hard-coat anodizing with Teflon®. Tri-clamp locking system. Made in USA. Sizes: 11", 13".