If you mean the scope that's a STS 7 moa C-More sight. If you mean the serrations, that comes with the Glock 17 slide from "CCF"
http://www.ccfraceframes.com/slides.html
Everything else is from JagerProducts.com. The pistol was originally a Glock 34. If I want to change to limitted all I have to do is swap slides. If I want to shoot production, I swap the slides and remove the magwell. It is that easy.
Hey Bob it was great seeing you at the match yesterday. Oh, and by the way that's one nice shooting Open Glock.
Likewise Jefe,,, nothing like fighting Evil...