The Tiger Rock Inc. FML-4# 223/5.56 Rifle M-Lok 4" Super Slim Free Float Handguard optimizes accuracy and control with premium quality materials. Engineered for enthusiasts and professionals, this handguard combines lightweight durability with an innovative design that enhances shooting performance. Matte Black Finish Inside Diameter: 1.3" for maximum airflow Aircraft Grade Aluminum for strength One Piece Free Float Design minimizes barrel vibration Integrated Picatinny Top Rail for accessory compatibility Constructed from robust 6061 T-6 Aluminum Elevate your shooting precision with the FML-4# handguard, where innovation meets reliability.