Hush Puppy Style Slide Lock

This is a dumb question I'll admit, but is it really impossible to lock a slide on a Glock without doing what Hush Puppy Project does? And no way to get their design outside of buying a Hush Puppy?

Yeah I saw the patents. Just hopeful. There's almost no other way I can see that working though. Just curious if it's possible to achieve that without getting an official Hush Puppy Glock 19.