Information about the acquisition of K4 automatic grenade launchers for Polish armed forces caused quite a few controversy. On the 1 hand, due to the scale and cost of respective 100 million dollars (the exact price is not yet known) and on the another hand due to the deficiency of technology transfer or acquisition of grenade launchers in Poland. We're talking 500,000 rounds of ammunition and a fewer 100 copies of 40 mm device grenade launcher. presently in the armed forces we have about 200 Mk19 Mod 3 grenade launchers of American production and an unspecified number of German HK GMGs utilized in peculiar Forces.