The Guntec USA AR10 Upper Receiver Parts Kit (brand part number GT-URK-308) rounds up the small, easy-to-lose components needed to finish an AR10/.308 upper build in one package instead of sourcing each piece individually. Guntec USA includes a complete .308 trap door ejection port cover assembly with its hinge pin, pin clip, and spring, a forward assist assembly with round, pin, and spring, and a .308 charging handle, giving builders everything needed to round out the upper beyond the barreled receiver itself. At roughly 10 ounces for the full kit, it’s a made-in-the-USA solution sized specifically for the AR10/AR308 footprint rather than a standard AR-15 kit.

Key Specifications

• Built for the AR10/AR308 upper receiver footprint.
• Includes a complete trap door ejection port cover assembly.
• Includes a forward assist assembly with round, pin, and spring.
• Includes a .308 charging handle.
• Weighs approximately 10 ounces for the full kit.
• Made in the USA.

Frequently Asked Questions

What’s included in this kit? A trap door ejection port cover assembly, a forward assist assembly, and a .308 charging handle.

Does this fit a standard AR-15? No, it’s sized specifically for the AR10/AR308 upper receiver footprint.

Buy the Guntec USA AR10 Upper Receiver Parts Kit – .308

Finish your AR10 upper build without hunting down small parts one at a time. Order it from our Guntec USA lineup, part of our gun parts kits selection, at our Lubbock, Texas gun shop for fast, direct shipping.