Gun (2010) on Netflix

Plot summary

Rich runs a gun-running operation in Detroit, and Angel, an old friend just out of prison, is drawn into it. The crew raids a club. Police and federal agents open an investigation into the gun trade. A handgun bought by a mathematics teacher is stolen from his home and used later in a killing, and the teacher sells it back to the shop that first sold it. From there the gun passes to Rich and his people. Gabriella, Rich's supplier and lover, is uneasy about how close he and Angel have become.