Where did the Weapon Blueprint go?

I’ve seen many old tutorials that shows how to change weapons super easy using a default Weapon Blueprint
But I’ve noticed that in the newer versions there’s no such blueprint, is there another way to add a weapon to the game?
Im using the FPS template with starter content but there’s no such thing

UE4 don’t have any ready inventory system ( UE3 had it but got removed to enforce devloper to make there own), you sure you that tutorial is not for UT4 or other game or had it own inventory?