In Latin America, the purchase of military equipment has experienced increasing complexity and difficulty, due to the dizzying technological advances that have been incorporated into the means of war. Because of the complexity and sophistication of equipment and materials, we are dealing with an integrated arms system that must necessarily interact with other systems. The greater amount of technology that has been incorporated makes it possible to increase the lethal capacity of arms systems and, therefore, increase the military capacity of a military force. In addition, this greater sophistication has increased, all the more, the technological gap between industrialized countries and developing countries, such as in Latin America, where the process of purchasing such equipment is more common. Faced with this situation, the most likely materiel to be purchased must be meticulously evaluated and analyzed, in order to prevent inefficiencies and fruitless expenditures, since funds are always scarce. This is the reason why it is so important to structure efficient methodologies, in order to evaluate the technical effectiveness of arms systems and the costs associated with them.