Lancer Systems Fn Scar Carbon Handguard Carbon Fiber - LCH-SCAR. The Proprietary Carbon Fiber Layup And Resin Combination Provides A Structure That Not Only Resists The Heat Associated With High Volume Firing But Which Is Also Rigid Enough To Stand Up To Heavy Use. Package Contents: Lancer Systems Fn Scar Carbon Handguard What firearm models does the manufacturer say Lancer Systems Fn Scar Carbon Handguard is compatible with? The manufacturer suggests that Lancer Systems Fn Scar Carbon Handguard is compatible with FN SCAR