Re: HK417 design fault
I'm not real familiar with the 417, but have an issued 416 next to me. I'm a little confused by your post. Can you post some photos identifying what you're talking about? Unless I'm really off on the 417, it was designed, like the 416, around a short-stroke piston system rather than a direct impingement gas system. I'm assuming there are differences in the 416 and 417, as I've put tens of thousands of rounds through my work rifle in poor conditions with minimal affect.