(1981–1988) M Series (1999–present) Grenade launchers GL 40 — side loading 40 mm grenade launcher Date codes Steyr pistols are marked with a three-digit date code on the slide just forward of the ejection port. The first letter represents the month of manufacture. The second and third letters represent the last two digits of the year of manufacture. In this example, the date code "BOY" indicates a pistol manufactured in April 2007. See also Steyr Sportwaffen GmbH References External links Companies of Austria-Hungary Firearm manufacturers of Austria Economy of Lower Austria 1864 establishments in the Austrian Empire