Guntec USA AR10 15 MLOK handguard. Brand new never used. Comes with barrel nut and all hardware to install. Link to handguard on Guntec website: https://guntecusa.com/product/15-ultra-lightweight-thin-m-lok-system-free-floating-handguard-with-monolithic-top-rail-308-cal/New price 150 asking $80 obo