Springfield also has one similar...Their Loaded model in black stainless.
Semper paratus.....virtute et armis
You do know that a comp on a .45 ACP does nothing but add forward weight...right?
This is the only Colt I've found that benefits/needs a comp!
My Colt Government XSE 460 Rowland.
its even tougher if youre stupid.
Have you thought about magna port?
The series 70 colt has a steel mainspring housing