S.E.C. Looking at Safety Data and Big Order for Taser Guns
Taser International says Securities and Exchange Commission has begun informal inquiry into company's statements about safety of its electric guns and $1.5 million sales order that it announced in Dec 2004; Taser sold 1,000 stun guns to Davidson's, distributor based in Arizona, for resale to federally licensed gun shops; Taser's shares plunge nearly 18 percent to $22.72 on Jan 7; company's stock has fallen 28.2 percent in 2005; Arizona attorney general's office says its lawyers have met with Taser executives to discuss concerns about safety of Taser's stun guns and company's plan to sell them to civilians; photo (M)