Trijicons NS question

[USPcompact45]

I ordered trijicons for my g30 and xd sub and I wanted to know if the trijicons were screwed type. The reason why I ask is that I hear a lot stories about glock factory front night sights getting very loose and I do not want this happening with trijicons. Thank you in advance.

[thenewguy]

Yes, the front sight screws on. A drop of LocTite will keep them snug.