KE Arms 223 Rem/556NATO Lower Receiver Parts Kit Black. These quality parts are made by a solid and trusted company and can be used for either a complete assembly or a custom build. This KE Arms 223 Rem/556NATO Lower Receiver Parts Kit comes with your receiver bolt carrier group forward assist bolt carrier group screws and forward assist screws all in a black finish. Make sure your receiver is in good working condition to minimize the chance of accidental damage. Get your KE Arms Lower Receiver Parts Kit for a quality made parts kit for your complete lower receiver. Specifications for KE Arms 223 Rem/556NATO Lower Receiver Parts Kit: Manufacturer: KE Arms Color: Black Caliber: 5.56x45mm NATO .223 Remington Package Contents: KE Arms 223 Rem/556NATO Lower Receiver Parts Kit KE Arms KEA1-50-01-543: 223 Rem/556NATO Lower Receiver Parts Kit Black