Yes, lots. I have two; m9-a1 & an m40.
Very hard to find in stock. You'll be better off ordering one online and having it shipped to your ffl.
The newest versions have a horizontal roll pin at the top rear of the slide. You'll want the big Taco striker bushings no matter what. They make the trigger really nice.
Steyr Accessories - BT Guide Rods
I want on SO BAD lol how did you like the sights??