Product Description The Radian Weapons Builder Kit is a premium AR-15-pattern billet upper and lower receiver set designed for builders who want high-end fit, finish, and fully ambidextrous capability. This kit pairs a billet upper receiver with an M-LOK compatible handguard and includes a selection of key Radian components to streamline your build, including the Raptor-SD ambidextrous charging handle and Talon 45/90 ambidextrous safety selector. Built with durable materials and precision manufacturing, it&&';;s an excellent foundation for a custom rifle or pistol build. Product Highlights Billet upper receiver includes dust cover, anti-rotation pin, and lightweight forward assist installed 8.5-inch handguard with Magpul M-LOK modular attachment interface for accessory mounting Includes Radian Raptor-SD ambidextrous charging handle for smooth, configurable operation Includes Radian Talon 45/90 ambidextrous safety selector for user-preference throw options Enhanced ambidextrous controls and lower-parts components to support a streamlined AR-15 build Specs Brand: RADIAN WEAPONS Manufacturer Part Number: R0435 UPC: 817093024185 Platform/Fit: AR-15 Handguard Length: 8.5 in Mounting System: M-LOK Color: Radian Black Included Components: Billet upper receiver (dust cover, anti-rotation pin, lightweight forward assist installed), handguard (M-LOK interface), ambidextrous lower receiver, Raptor-SD ambidextrous charging handle, Talon 45/90 ambidextrous safety selector, ambidextrous bolt catch & release, ambidextrous magazine release, enhanced takedown pin set, aluminum barrel nut, barrel nut wrench, (4) handguard cross bolts, washers, and nuts Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&&';;s manufacturer.