Guntec AR-10 Upper Receiver Parts Kit Features The Guntec USA AR-10 Upper Receiver Parts Kit bundles together several of the small components that are easy to overlook when assembling an AR-10 or AR-308 upper receiver. Included in the kit is a complete forward assist assembly consisting of the forward assist round pin and spring giving the rifle the ability to fully seat the bolt carrier group when needed. The kit also includes an ejection port cover with its hinge pin pin clip and spring keeping the chamber area protected from dust and debris during storage and transport between uses. Rounding out the kit is a .308 trap door assembly and a .308 charging handle two additional components that are often needed when building an upper receiver from separate parts rather than buying one pre-assembled. Finished in black matte to match standard AR-10 and AR-308 hardware these components blend seamlessly into a finished build. Having these smaller parts bundled together in one kit saves a builder from having to source each piece individually from different suppliers. This Guntec USA kit is a practical time-saving option for anyone assembling or repairing an AR-10 upper receiver. Guntec AR-10 Upper Receiver Parts Kit Specifications Manufacturer: GunTec Model: Upper Receiver Parts Kit Compatible Hosts: AR-10/AR-308 Finish: Black Matte Includes: Trap Door Assembly Forward Assist Assembly Charging Handle Ejection Port Cover Hardware Country of Origin: Made in the USA Available At: GrabAGun