MILLSTADT, Mo. -- At first glance, it seems absurd to suggest that a small company on the outskirts of St. Louis could be a serious player in the race to provide the U.S. Army with its next handgun. This is, after all, a major event in the realm of military weapons -- having happened only twice in the past 100 or so years. And it's expected to draw the attention of the industry's most powerful names, including Smith & Wesson, Beretta, Ruger and Glock. And then there's tiny Detonics, a five-person operation in Millstadt that fashions itself more tech company...