Seven Houstonians have been convicted in a federal court of conspiring to traffic dozens of AK-47 variant rifles into Mexico, federal attorneys and ATF officials announced Monday. Abel Lopez, 34, Arturo Garcia, 30, Roberto Santana Mears, 22, Mary Bel Deanda, 39, Martha Gonzales, 41, Angel Aquino-Pineda, 27, and Javier Resendez, 29, have all pleaded guilty in connection with the operation.