Windham Weaponry Rail Gas Block
Installed as replacement to standard AR-15-based weapons gas block, it adds a Picatinny rail that allows installing your own accessory front sight.
20" barrel for AR-15 and compatible 5.56x45
AR-15 Daniel Defense RIS II 9.5 handguard (Flat Dark Earth)
AR-15 Daniel Defense RIS II 9.5 handguard
Remington Arms handguard for a R11 RSASS
Handguard War Sport LVOA-C blk. for use with AR-15 and compatible