Product DescriptionThe BATTLE ARMS DEVELOPMENT AE-LR-BLK stripped lower receiver is built as a solid foundation for custom AR-15 builds chambered in .223 Remington and 5.56 NATO. Machined from durable 7075-T6 aluminum alloy and finished in black hard anodize, this lower receiver offers strength, corrosion resistance, and a clean professional appearance. Designed for builders who want flexibility, it is compatible with standard AR-15 lower parts kits and accepts common mil-spec style components for a wide range of rifle configurations. Its multi-caliber marking adds versatility for future build options using standard AR-15 upper assemblies.Product Highlights Stripped AR-15 lower receiver designed for .223 Remington and 5.56 NATO builds Constructed from 7075-T6 aluminum alloy for strength, durability, and reduced weight Black hard anodized finish helps resist wear, corrosion, and regular field use Compatible with standard AR-15 lower parts kits for broad aftermarket support Multi-caliber marked receiver offers added flexibility for custom AR-platform builds Specs Brand: BATTLE ARMS DEVELOPMENT Manufacturer Part Number: AE-LR-BLK UPC: 810033782183 Product Type: Stripped Lower Receiver Platform: AR-15 Caliber: .223 Rem / 5.56 NATO Material: 7075-T6 Aluminum Alloy Finish: Black Hard Anodize Color: Black Action: Semi-Automatic Compatibility: Standard AR-15 Lower Parts Kits Multi-Caliber Marked: Yes 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.