The EIG-Eibar 9mm black powder rifle wasn't made by one single entity but was produced in the gun making hub of Eibar, Spain, often by various smaller workshops or subcontractors for the EIG (Firearms Import & Export Corp) company, a distributor known for importing Spanish firearms into the U.S. for the hobby market in the mid-20th century. These were typically simple, percussion muzzle loaders reflecting Eibar's rich gunsmithing history, sold as affordable, traditional firearms.