So, DSA made some FALs for the Mexican military and had some contract overrun receivers. This is one of those. It's marked "S.D.N. Mexico D.F." S.D.N. stands for “Secretaria de la Defense Nacional” (IE: The Mexican Department of Defense). Basically, that makes it extra cool beyond simply being a paratrooper FAL. If you want to LARP as both sides of the current Mexican drug wars, I can sell you a gold Desert Eagle as well.