Aviation arms plastic model kits are not models by themselves, but can be an organic and integral part of the model of a combat aircraft or helicopter. Some manufacturers intentionally produce models of combat air force without bombs, missiles and all sorts of other means of air arming, referring to the instructions to the kits that are produced separately. Each such kit can embellish and make your model unique.
For an experienced modeler, an important factor in the assembly is the compliance of arming with a real list of ammunition used by this type of aircraft or helicopter in a specific shooting war.