Infantry Weapons of the World (1990)

From the web:

Supplement for Twilight 2000 (2nd Edition) that outlines over 220 small arms for use in the game. Weapons include pistols, rifles, sub-machine guns, machine guns, and shotguns from around the world that were in use around the year 2000. Each weapon is accompanied by an illustration, a short description, and stats for use in the game.