American Defense Systems, Inc. (“American Defense” or “the company”) is a specialized manufacturer of precision-machined firearm components based in Cleveland, Ohio. Founded in 2001, the company develops and produces quick-detach mounting solutions, free-float rails and related accessories for rifles and other small arms. Its core product lines include the SPR (Super Precision Rail) series, Quick Detach (QD) springs and mount interfaces designed to facilitate rapid attachment and removal of optics, lights and other battlefield equipment with consistent performance and zero-return accuracy.
American Defense serves military, law enforcement and civilian tactical markets, supplying components to U.S. government agencies, allied foreign defense organizations and commercial firearms dealers. The company’s QD mounts are renowned for their robust design, repeatable mounting interface and corrosion-resistant finishes, making them suitable for harsh environmental conditions. The SPR rails and related accessories provide end-users with modularity and adaptability for mounting a wide array of optical, electronic and mechanical sights.
Through its ISO9001-certified manufacturing facilities, American Defense emphasizes stringent quality control processes, tight tolerances and advanced machining techniques. By leveraging in-house CNC machining centers and proprietary engineering, the company ensures that each product meets rigorous specifications for durability, repeatability and performance under operational stresses. This focus on engineering excellence has helped establish its reputation among precision firearms component manufacturers.
American Defense also offers custom design and engineering support for specialized applications, collaborating with defense contractors, original equipment manufacturers and end users on tailored mounting solutions. While primarily based in the United States, the company’s products have achieved global distribution through authorized dealers and integration partners, reflecting its position as a niche supplier of critical firearm accessories and mounting hardware.
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