Rob Regent of SGW Designworks breaks down the inner working of the 9mm smart gun, which works only for the designated user, during a presentation for shareholders and potential investors in Boise, Idaho, U.S. January 7, 2022. REUTERS/Brian LosnessJan 11 (Reuters) - Personalized smart guns, which can be fired only by verified users, may finally become available to U.S. consumers after two decades of questions about reliability and concerns they will usher in a new wave of government regulation.Four-year-old LodeStar Works on Friday unveiled its 9mm smart handgun for shareholders and investors in Boise, Idaho. And a Kansas company, SmartGunz...