Luth-AR A1 Triangular Carbine Handguard w/metal heat shield Black Carbine. Made from high-quality materials this durable handguard provides a comfortable and secure grip for your firearm. Its unique triangular shape offers a unique look and improved handling. Upgrade your AR with the A1 Triangular Handguard. Each of the handguard halves are lined with aluminum heat shields to help protect you and the handguard from the barrel heat. Specifications for Luth-AR A1 Triangular Carbine Handguard w/metal heat shield: Manufacturer: Luth-AR Gun Make: AR Platform Gun Model: AR-15 Gas System Length: Carbine Length Package Contents: Luth-AR A1 Triangular Carbine Handguard w/metal heat shield Luth-AR XM-177: A1 Triangular Carbine Handguard w/metal heat shield Black Carbine