Lantac UAR 7075T6 Billet Upper SmoothCam Low Friction Cam Pin

The LANTAC UAR 7075T6 Billet Upper from Lantac delivers ultra-smooth operation through the patent pending SMOOTHCAM system, featuring a domed head, low friction cam pin and a specially engineered upper receiver that work together with a blended cam recess to minimize wear and enhance reciprocation. Machined from certified 7075-T6 aluminum and finished in milspec Type 3 Hardcoat Anodized Deep Black, this precision upper offers superior rigidity, corrosion resistance, and lasting durability under demanding field and range conditions. Its unique ultra-smooth bore achieves a roughness average of just 16 micro inches, significantly reduced from standard uppers, which translates to decreased bolt carrier friction and a noticeably smoother cycling action. Barrel nut threads, bore and barrel extension surfaces are machined in a single operation to ensure perfect concentricity and perpendicular alignment to the barrel assembly, while the cam pin recess is shaped to promote seamless flow into the main reciprocation channel. Ideal for high-performance AR platforms where consistency, smoothness, and reliability are essential, the UAR upper combines rigorous manufacturing standards with advanced design features to deliver refined shooting accuracy and repeatable operation in rugged environments.