This M1 Carbine flash hider goes on easily with no gunsmithing required. No modifications are required to attach this to your M1 Carbine rifle. Original military style flash hider that clamps on all M1 Carbines. Constructed of black phosphate coated high-strength steel, used in very good to excellent condition. Sold for display purposes only and may not be legal in all areas. Check your state and local laws before ordering.