Here is a link:
http://www.barnettcrossbows.com/catalogsmanuals
Select "Barnett Catalogs"
Scroll down and select "Raptor FX2"
Select "Download Riser Assembly Diagram"
At the top of the page you can click to enlarge the picture. Its shown something around 38%.
Any part numbers shown in a red block or red line, one would have to go through a dealer as these are not available for a customer to purchase from Barnett. I found this out requesting a trigger assembly for my Barnett Ghost.
If you have the old riser, compare the machined openings in it as compared to the riser picture in the diagram.
The part #6720 is what I found. I feel this one fits even if your bow color (stock, limb) markings may be different for the series you have.
All the best.
