Equipped with an M-Lok rail, the A&K 1873RS Lever Action is available at Gunfire... "We complement our collection of airsoft replicas based on historical models. The 1873RS rifle from A&K is a combination of modern solutions with elements used in the legendary American John Browning rifle. The replica is almost entirely made of metal. The metal parts are the body, outer barrel, charging handle, RIS rail, or M-LOK handguard.