The workhorse mlok compatible rail system was designed to be a lightweight and slimline option to be used on mil-spec carbines available on the market today.With mlok mounting options at the 3 6 and 9 o'clock positions and skeletonized areas where mlok is not used this handguard not only offers function but shaves weight where it is not needed.They still maintain 1913 mil-spec picatinny rail at the 12 o'clock position that is "notch cut" to match their upper receiver and reduce weight again.Offered in multiple lengths to accommodate different barrel lengths and different needs the workhorse offers everything you need and nothing you don't.Firearm Model: AR15/AR10Material: 6061-T6 AluminumFinish: AnodizedFeatures: M-LOKFree Floating: Yes