Disclaimer - I am horrible at taking photographs. The pictures included to not fairly represent the quality of work.
For those that haven't heard, Tar Heel State is now doing engraving. They are located in Matthews and can, with with an appointment, do it while you wait.
I've used Ident and CS223 and the work is certainly on their level and 1,000 times faster than Ident.
They can engrave almost anywhere, trigger guard (if non-removable), bottom of trigger area, etc...
They received mine on a Friday and it was back in the mail on Monday.
Here's a link to the website
http://tarheelstatefirearms.com/store/index.php?route=product/product&path=57_111&product_id=232
The first picture is a MPA30 on the side of the receiver and the second a mini Uzi on the bottom.
Second Disclaimer - I am not affiliated with Tar Heel State Firearms or any of its subsidiaries nor any relation to any employee there (although I have spend more than one paycheck with them).