We are the official U.S. consumer distributor for Dong In Optical Co., Ltd. — a global leader in precision rifle scopes and optical systems, proudly engineered and manufactured in South Korea. With decades of expertise behind their designs, Dong In optics are trusted by defense professionals, law enforcement, and demanding sports shooters around the world.

GMD is also the parent company of Iguana Airguns, a dedicated brand focused on designing and delivering innovative accessories for the airgun community. From precision scope mounts to custom mods and support gear, Iguana Airguns enhances the performance of today’s most popular air platforms.

Whether you’re an outdoor retailer, tactical distributor, or an enthusiast looking for cutting-edge gear, GMD delivers the brands and equipment you can trust — with U.S.-based support and fulfillment.