Inspired by the XM 177 Moderator, this extended flash hider is designed to bring a 10-1/2 inches barrel to a legal non NFA length when permanently pinned and welded. Overall length of 6.15 inches with a 1 inches diameter Heat-treated for exceptional strength and long lasting durability Phosphate-coated for superior corrosion-resistance Milled flats for easy installation, providing a secure and straightforward fit Increases the overall length of the barrel by approximately 5.56 inches when pinned and welded 1/8 inches hole pre-drilled for easy pin and weld installation, ensuring secure and permanent attachment Fully precision-machined in house at KAK Industry for superior quality and craftsmanship