A gun mount for mounting a weapon to a vehicle includes a weapon mount plate defining a planar surface. First and second side plates are oriented at an angle to the weapon mount plate planar surface. Front and rear plates are perpendicular to the weapon mount plate and the first and second side plates supporting the weapon mount plate and fixed to the first and second side plates. A male tab extends from both the first and second side plates. A female slot is created in individual ones of both the front and rear plates. The female slot is aligned to slidably receive the male tab with a male tab freely extending portion extending beyond the female slot. A tab weld joint created at the freely extending portion of the male tab fixes the first and second side plates to the front and rear plates.