OKLAHOMA CITY (KFOR) — A major operation targeting violent crime in Oklahoma City resulted in dozens of defendants being charged with firearm and drug crimes. The two month, multi-partnership initiative was announced Tuesday morning by the U.S. Attorney’s Office for the Western District of Oklahoma. "Oklahoma City is safer today,” U.S. Attorney Robert J. Troester said. “Safer because 50 individuals have been charged in federal and state court with a variety of firearms and drug trafficking offense." Operation Sonic Boom is what led to those charges. Troester said 193 guns, including 83 machine gun conversion devices, or MCDs, and nearly 140 pounds of drugs with a street value of $750,000 were all recovered in the initiative. Machine gun conversion devices. Photo courtesy KFOR. Seized guns from Operation Sonic Boom. Photo courtesy KFOR. Seized equipment from Operation Sonic Boom. Photo courtesy KFOR. Seized guns from Operation Sonic Boom. Photo courtesy KFOR. Operation Sonic Boom press conference. Photo courtesy KFOR. "180 guns, plus guns in two months, less than two months really, should scare everybody,” said Special Agent Jeff Boshek with the Bureau of Alcohol, Firearms, Tobacco and Explosives Dallas Field Office. Troester and others involved in the operation zeroed in on the MCDs, also known as switches, that he called a clear and present danger to citizens. "These small either plastic or metal devices can convert handguns and rifles into fully automatic weapons, machine guns,” Troester said. Norman Police release video of alleged Campus Corner beating They can be made by 3-D printers like one they recovered in the operation, or ordered from overseas and online. Right now, Troester said they’re not illegal under Oklahoma law, but they are illegal under federal law. Since another operation last year called Switch Off, they recovered 86 of those while charging 39 people. "When law enforcement finds them, we will prosecute them,” Troester said. In their words, it was a successful operation. "We can't quantify the lives that were saved by this operation,” Oklahoma City Police Chief Ron Bacy said. But it’s against a problem they feel they’ll be fighting a lot in the future. "We're still here and we're not leaving. We're doubling down,” Boshek said. Over 40 of the defendants charged in Sonic Boom are being charged federally. Only eight of them are facing state charges in Oklahoma County. The numbers listed in the beginning of the story are the collective recoveries over the course of the operation and not attributed to each defendant.