I picked up a SS guide rod last week from ssguiderods.com for my CT45. This add-on was not necessary, nor did it improve the function of the pistol, but it sure looks good! After a call to technical support at KAHR and measuring the length of my guide rod, I confirmed that the factory CT45 guide rod is the same part as the factory TP45 guide rod. KAHR Part: 006CT45 (006TP45) - recoil guide rod. ssguiderods.com offers a SS guide rod for the TP45 so I placed an order for their SS guide rod based on my research. Their SS guide rod arrived with a 90 degree edge on the end that protrudes through the spring and slide. Installation required beveling the end of the guide rod with a fine metal file so it would not catch or bind on the recoil spring while being inserted into the hole in the slide. The procedure took about 10 minutes to complete. I am very please with the stainless steel look.