Because you haven't made them yet.Not to derail this thread, but why hasn’t someone come up with a solid, reliable aftermarket option for the magazine clamps? It’s really not rocket science. If there are patent issues, then I’m sure a clever engineer could come up with an alternate locking mechanism (probably an improvement).
It just seems like an itch yearning to be scratched!!
yeah, I would figure that most HK owners would "break down the door" for that clamp......after all it's made of plastic so it won't leave a scratch their precious, precious MP5 magazines