combining items to make a new item

I want to combine two in game items to create a new item. Wondering if anyone would have a suggestion on how to accomplish this, I will be working in Maya to make some aesthetic changes.

Think I figured out what I need to do, but not sure how to go about it. I believe I would need to add a component to the blueprint I am working on, but not seeing a way to do that. Any suggestions?

Give us some more information =]

To create new items, you need to create a minimum of the following

If you want it craftable

If it has a 3d model
<Item Core Blueprint>

If it has Ammo

If it is a structure