Obviously, I have a Glock 17. I bought a rail system for a scope. It was designed, I believe for a Gen 1 or 2 system in china. and they say it fits the Marui17C, which is really a 3rd generation. So they are actually wrong. It does not fit. I would have to machine out. But that is not worth doing. Why do I want a rail system for a scope? Its a fun accuracy thing. Not really needed. and it won't fit in any holster that way, of course. But this is a home-defensive weapon and my eyes are getting little ... you know, too many birthday parties, etc. What rail systems are there available? Any ideas? See pictures: Thanks!