Titanfall Data Knife Project

[jmcbain]

This is my first replica project, and honestly I dont know where to begin. I want to make a replica of the Data Knife from the video game Titanfall. Any help with identifying parts, or suggestions for making knife replicas would be appreciated. I have attached pictures of the knife. Again, any help would be appreciated, thank you.

 

[jmcbain]

The thumb-stick looks like it comes from a N64, but is black instead of grey. Thoughts?

 

[jmcbain]

I cant figure out exactly what the yellow part would be. It looks like a sim card, but i dont know what would be that size, any ideas?

 

[jmcbain]

I think the light grey on the handle in the left picture is just a foam. I cant figure out exactly what the yellow part would be. It looks like a sim card, but i dont know what would be that size, any ideas?