Designed and manufactured by Lewis Machine & Tool Company, the patent-pending Monolithic Rail Platform, or MRP, is the most radical variation of an integrated rail system ever conceived. This one-piece receiver/free-floating* handguard/rail system is precision machined from a solid aluminum forging for absolute strength and consistency. The MRP completely replaces the upper receiver and provides an unprecedented level of versatility to the operator. Package Includes: * One Torque Wrench with driver. * Operations Manual. * Two Rail Panels. * One 10.5"" Chrome Lined Barrel. * Semi-Auto Bolt & bolt Carrier NOT Included. * Charging Handle NOT Included. | 