Quote Originally Posted by UWone77 View Post
Is the 507K not doing it's job? Or just peace of mind?
About the only pros that I can think of is the enclosed one will help with stuff not getting in the optic and/or maybe fogging issues.

It's not going to be a common thing but it will be a lot more likely that I will have my EDC with me even in really bad weather hence the idea of the enclosed dot.

That said I've never had a single problem with my 507k.