Best non-windowed, RMR glock 19 slide?

I'm trying to build a grit grips gun with a simple slide. I've only come across windowed and ported slides, which I don't like, because debris and other stuff would get inside the gun. Also, I don't like the look of it either, but oh well.

So far I've seen the Zev Duty slide, but it's pretty expensive at around $470. I really like this slide, but the only problem is that it's windowed and ported.

So far I'm going for this slide bundle.

Any suggestions on what slides has angled serrations, RMR cut, but isn't windowed? Thanks.