At Check-Mate, we adhere to USGI specifications when producing our M1A-M14 magazines while utilizing the knowledge and expertise only achieved from more than 30 years as a preferred Original Equipment Manufacturer to the United States Military. These unique through hardened magazines are made from the highest quality American milled steel and are coated with a specified corrosion resistant phosphate finish. Our anti-tilt follower design ensures propert feed every time, and the high performance government specification springs are heavy duty and built to last. These magazines are available with 5, 10, 15, 20, and 25 rounds. 20 Round magazines are also available in stainless steel.