LanTac UAR 7075-T6 Billet Upper Receiver

Introducing the UAR Upper Receiver

The UAR Upper Receiver is a testament to precision engineering, designed for those who demand excellence in their firearms. At its core lies the innovative SMOOTHCAM™ system, featuring a domed head and low friction cam pin that work in harmony with a specially crafted upper receiver. This combination ensures an operation so smooth; it sets new standards in firearm performance.

Crafted from Billet 7075-T6 certified aluminum, this upper receiver boasts military specification Type III Class II Deep Black Hardcoat Anodizing. Such construction promises durability and resilience under demanding conditions while maintaining an ultra-smooth bore finish of just 16 micro inches roughness average—far superior to conventional uppers that range between 32-63 micro inches or higher.

The meticulous design extends to every component, where barrel nut threads, bore, and barrel extension surfaces are machined concurrently. This guarantees perfect concentricity and perpendicular alignment with the barrel fixing assembly—a critical factor for achieving unparalleled accuracy.

A key feature is the expertly engineered cam pin recess that seamlessly integrates into the main reciprocation channel. The carefully contoured surface minimizes wear as it guides the uniquely designed radial domed head cam pin through its cycle. This thoughtful attention to detail translates into reduced bolt carrier friction and an overall smoother cycling action.

For enthusiasts seeking refined craftsmanship combined with cutting-edge technology, the UAR Upper Receiver represents more than just a component—it embodies reliability and precision redefined.