I tricked out a 37 for a guy about 3 years ago. It turned out pretty nice.
Side saddle
Ext mag tube
Ghost ring sights
Fiberglass stocks
Gunkote finish
I wish I had some pics. The owner is in Irag right now. And the m37 is too.
There is not a lot of products out there for a m37, so it was a full custom job to get all this stuff to work.
Check out my web page for some more examples of my work.
http://www.thearmsroom.com
Thanks,
Lee