Primary Weapons 3G2FSC12A1 FSC Mod 2 .223 4140 Steel 2.33" X .865" The unique port design of the FSC Series yields muzzle control that meets or exceeds the performance of the best muzzle brakes on the market without the teeth-rattling overpressure indicative of other brakes and compensators. Type: Flash Hider Model: 556/M16 Dimensions: 2.33" X .865" Size: 223 Material: 4140 Steel Action: N/A Trigger: N/A