Our country attaches great importance to the defense industry due to its strategiclocation. The increase in the properties expected from light weapons in recent yearsin direct proportion with the developing technology and increasing competitionconditions reveals that the gun shooting lifetimes reach higher figures in domesticand international arms purchase specifications. Accordingly, developments inmaterial technology, such as the use of composite materials, must be constantlyadapted to the defense industry. In this study, it was aimed to select polymercomposite materials with optimum properties to be used in gun bodies. Polyamide 66(PA66) and polycarbonate (PC) materials determined to have suitable matrixproperties for light weapons were reinforced using glass and carbon fiber. Incomposite materials produced by injection molding method, the rate of reinforcementwas used in the range of 15% - 40%. Composite material samples were examinedphysically, mechanically and tribologically and analyzed in terms of the propertiessought in a weapon material. In the mechanical experiments, it has been shown thatthe strength values and hardness of composite materials increase approximately 50%with the increase of fiber reinforcement, and the fiber type significantly affects theelastic behavior, strength value and temperature dependence of the compositematerials. It has been revealed that the water absorbency and corrosion resistance ofthe polymer composite materials examined depend on the matrix type rather than thefiber type. It is determined that the abrasion resistance in composite materials ispredominantly dependent on the matrix type although it is partially affected by thefiber type. As a result of the examinations carried out, it was concluded that the mostsuitable composite material that can be used as gun frame material in light weaponsis PA66, which contains 40% carbon fiber.