I think the turnaround time was 6-8 weeks. I didn't consider it unreasonable. I also had them replace the barrel with one I had bought. It was literally half to do the conversion down there rather than with a local smith. They gave me a bit of a price break on both since I had them do the smith work before the NP3 Plus work. 

My next project with them will be my Smython project. I have an 8 inch .38 SPL Python revolver barrel that I plan on putting on a S&W 15-3. Just need to stop with the silly acquisitions I have been up to lately.