Midwest Industries HK417/MR762 Upper Receiver Rod Black. Ultimate tool for barrel nut installs. Excellent for removing stubborn/seized barrel nuts without damaging upper. Designed for muzzle device installs and will not damage index pin. Can be used to install forward assist/port door cover. Machined from 4140 Ordnance grade steel. Durable Black Oxide finished for years of use. Will not mar or damage exterior of upper receiver. Receiver mounted sights can be left installed. Can be installed horizontally or vertically in bench vise. Specifications for Midwest Industries HK417/MR762 Upper Receiver Rod: Manufacturer: Midwest Industries Gun Type: Rifle Color: Black Package Contents: Midwest Industries HK417/MR762 Upper Receiver Rod Midwest Industries MI-URR-HK417: HK417/MR762 Upper Receiver Rod Black