The AR-10 is a semi automatic rifle platform designed for larger calibers like .308 Winchester and 7.62×51 NATO, known for its power, accuracy, and versatility in hunting, target shooting, and tactical applications. The AR-10 works with specific upper and lower receivers, barrels, bolt carrier groups, magazines, buffer tubes, stocks, handguards, gas systems, and lower parts kits. Its components are generally not interchangeable with AR-15 parts, making AR-10 builds unique for those seeking long-range and high-performance rifle options.