Both sight mount and stabilizer were printed by Dan Beaven on his homemade DLP 3d printer:
http://diy3dprinting.blogspot.com/2014/04/aluminum-frame-diy-3d-dlp-printer-by.html
Here is the source, Dans blog with more details:
http://3dprintzothar.blogspot.ca/2014/03/3d-dlp-printer.html
For more 3d printed archery see:
http://diy3dprinting.blogspot.com/search/label/archery