Glock has stopped using tenifer. I don't know what kind of treatment they are using these days, but it isn't as resistant to rust as tenifer.
By the way, I'm guessing you already knew it, but the black finish on a Glock slide is not Tenifer. Tenifer was actually under the black finish.
The copper lube that Glock holds so dear is still in use.
I guess I'll stick with my gen 3's I've had for several years. I was considering selling them and buying myself a set of gen 4's.
