The Radian Weapons Billet Upper & Lower Builder Sets are designed to offer top-notch quality and durability for AR15 enthusiasts. The Radian Weapons Billet Upper & Lower Builder Sets combine advanced features with robust construction, making them a preferred choice for those seeking premium AR15 components. Whether for personal use or professional applications, these sets are designed to provide lasting performance and ergonomic flexibility, catering to both left-handed and right-handed shooters alike. Here are some key details and features of these builder sets: Billet Upper Receiver: Comes with a Dust Cover, Anti-Rotation Pin, and Lightweight Forward Assist pre-installed. Hand Guard: Features the Magpul M-LOKA(R) Modular Attachment Interface, providing versatility for accessories and attachments. Radian AX556 Lower Receiver: Known for its robust construction and compatibility with various AR15 components. Raptor-SD Ambidextrous Charging Handle: Allows for easy and ambidextrous operation of the charging handle. Radian Talon 45/90 Ambidextrous Safety Selector: Offers ambidextrous control over the firearm's safety settings, allowing for flexibility in operation. Ambidextrous Bolt Catch & Release: Enhances ease of use for both left-handed and right-handed shooters. Ambidextrous Magazine Release: Provides convenient magazine changes from either side of the firearm. Enhanced Takedown Pin Set: Designed for durability and ease of maintenance during disassembly. Aluminum Barrel Nut: Ensures a secure and stable attachment of the handguard to the upper receiver. Barrel Nut Wrench: Included tool for installation and maintenance of the barrel nut. Hand Guard Cross Bolts, Washers & Nuts: Hardware necessary for securely mounting the handguard. Additional Features: Materials and Engineering: Constructed from high-quality materials to ensure longevity and reliability. Manufacturer Reputation: Radian Weapons is renowned for producing superior quality firearm components.