This F&D Defense rifle in .308 Win is as they claim the world?��s best AR10. The FD308 platform offers the performance and reliability that exceeds expectations right out of the box. It is guaranteed to shoot sub minute of angle but is capable of 3/8 MOA groups. It features exclusive precision action components, patent pending high-efficiency gas-piston system, matched lower, upper, rail, bolt and extension, Geissele trigger options, Magpul 20 round Pmag and UBR stock and a lifetime guarantee. If a precision semi-automatic rifle is what you are looking for you will be hard pressed to match the quality and proficiency of F&D Defense.