Should I Customize My Echelon?

[Warrior9(Ret)]

flowchart says

A. Do I want to customize?

Yes =======> customize

Maybe ====> return to A

No ======> shoot

 

[Warrior9(Ret)]

The only customizing I want to do is to a SA Mil-Spec in .45 ACP.
I got the idea after reading a article about “Retro” upgrades.
Harrison Designs offers many different parts.