Fred Rexer, Jr „ displays his VC-made Thompson SMG copy, captured in Vietnam. The weapon has no rear sight. /Courtesy of Fred Rexer, Jr.) As a senior military advisor. Col. Frederick Roseman was allowed to bring an enemy gun home from Vietnam as a war trophy. Instead of the many flashy weapons, he chose a battered and cut-down old Dame shotgun. Back in the States, he worked on the little 20-gauge, refinishing it into a fine and lovely sporting double barrel. What started out as a French plantation owner's sport gun was first converted for humid jungle warfare by the Viet Minh, then passed along to the Vietcong for use against the Americans. Now Colonel Roseman has Americanized it as a fine sporting gun once more. Hard work by nonprofessional designers brought our side interesting results, too. Pat Scrufari, an amateur engineer, modified a standard Smith & Wesson pistol into a double-barreled survival weapon. Scrufari's weapon is an over/under, with a .22 rimfire on top, bottomed by a .357 Magnum. The cartridges are nested in the same cylinder, with the .22s ringing the outer edge between the .357 holes. The pistol holds five shells of each caliber. In 1976, Scrufari tried to interest the military in his