How do i add Ironbelly Studios AK to the generic shooter template on unreal marketplace?

Development Character & Animation
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1

So i got this

And the generic shooter: Generic Shooter in Blueprints - UE Marketplace

I need to add that animated fps aks74u to the generic shooter pack, which i cant figure out how to do

By the way thats an animated model that has a hand model

Anyone have experience with this or can help me?