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I recently purchased a semi auto TWN MG34 and right from the start she would stove pipe the spent cartridges. I tried just about eveything to fix the issue but to no avail. So far I changed the recoil spring, barrel, bolt assembly, ejector pin and many other parts. I decided to take a high speed video of the problem and it seems to be something really silly and easy to fix. Basically the round is extracted, comes out, bounces off the trigger guard and goes back towards the front of the rifle into the ejection slot and then gets slamed back into the gun by the bolt assembly. It would seem that by adjusting the angle of the trigger guard so that the cartridge would bounce downwards instead of upwards would solve the problem. Unfortunately I tried attaching various things to the trigger guard to adjust the deflection but to no avail. You can see the high speed video at If anyone could look at the video and offer some kind of suggestion as to what might be happening or a possible fix, would be greatly appreciated.