Good day dear friends I recently bought a blow magnum 9mm blank pistol (silver) and from the first shot i get the following problem. I load it properly and arm it, when i fire the moving parts do not move back to eject the old cartridge and insert the new one. When i do it manually it feels normal as if the gun was not semi-automatic... I disassembled, checked, and cleaned it but no luck. I Checked for loose or damaged parts but it looks ok. I am very disapointed. Any ideas ?