The Tiger Rock Inc. FSSK-ODG-10 Cerakote OD Green AR-15 Ultra Light Frame Rail System brings together an exceptional blend of strength and lightweight design. Engineered from aircraft-grade 6061-T6 aluminum, this robust 10-inch rail offers ultimate durability without compromising performance. With a user-friendly installation process and customizable features, this rail system is an ideal choice for tactical enthusiasts. The internal diameter is designed to accommodate a variety of attachments, while keymod locations provide versatility for enhancing your setup. Material: Aircraft-grade 6061-T6 aluminum Length: 10 inches Internal diameter: 1.35 inches width, 1.67 inches height Keymod locations: 3, 6, 9, and 12 o'clock Top rail features four Picatinny slots Cerakote OD Green finish for aesthetic appeal Clamp-on design with proprietary hardware for easy installation Steel barrel nut for added durability Experience exceptional performance and customization with the Tiger Rock FSSK-ODG-10 rail.