Lantac Side Charger Multi-Caliber. Like other AR15 Upper Receivers it is made from T6 7075 Billet Aluminum and machined from a solid block making it durable and reliable. It has a patent-pending SMOOTHCAM system which features a domed head low friction cam pin and special receiver than lends ultra smooth operation to your firearm. Plus as a stripped upper you can customize it however you like installing different barrel lengths charging handles BCGs and more. If you're looking to start a new build or upgrade an old one you can't go wrong with the Lantac LA00270. Specifications for Lantac LA00270 Side Charger Multi-Caliber: Manufacturer: LANTAC Color: Black Finish: Black Hard Anodize Fabric/Material: 7075-T6 Aluminum Caliber: 5.56x45mm NATO Gun Model: AR-15 Features of Lantac LA00270 Side Charger Multi-Caliber Upper Receiver: Machined Form T6 7075 Billet Aluminum Black Anodized Finish Stripped Upper Receiver Ready for 5.56x45mm NATO Package Contents: Lantac LA00270 Side Charger Multi-Caliber AR 15 Upper Receiver The Lantac LA00270 Side Charger Multi-Caliber is a quality addition to the LANTAC lineup. For more great deals on AR15 Upper Receivers by LANTAC please browse our Lantac Gun Parts page. What firearm models does the manufacturer say Lantac LA00270 Side Charger Multi-Caliber is compatible with? The manufacturer suggests that Lantac LA00270 Side Charger Multi-Caliber is compatible with AR-15Lantac USC Upper Side Charger for AR15 Rifles inc CP-R360 Cam Pin LA00270