I just got an email advertising a 15% discount on posted prices for machine work for the 4th of July at Primary Machine in Lafayette, LA. www.primarymachine.com. They specialize in milling CZ, Glock, and 1911 slides for red dot optics. Very nice work and very nice people. At the reduced prices, it is a very good deal. Includes Cerakoting. They did a great job for me.