The Guntec USA GUNTEC AR10 UPPER RECEIVER delivers a robust upgrade for AR-10 and AR-308 platforms, combining practical features with proven reliability in a compact 10 oz design. Built to enhance function and longevity, this upper receiver includes a .308 trap door assembly for secure chamber access, a forward assist assembly to aid malfunctions recovery, and a .308 charging handle for smooth, consistent cycling, making it a versatile choice for precision rifle builds and field reliability. Crafted to fit AR-10 configurations, it integrates seamlessly with compatible components and delivers a thoughtful balance of weight and strength that shooters appreciate in a dedicated upper receiver parts kit. The unit is made in the USA and sits at an dimensions footprint of 1.15 x 3.80 x 9.60, with a black matte finish that complements varied setups and optics configurations. Ideal for enthusiasts seeking a dependable upgrade in rifle parts and upper receiver assemblies, this piece supports AR-10 and AR-308 applications while maintaining compatibility with the broader AR-15 accessory ecosystem. Trust in this Guntec USA offering to enhance performance, accuracy, and field readiness without compromising on build quality.