I got an itch to try making some scifi weapons and ended up with a few sets. I usually make environments and props so this was a fun change. They're all modeled in Maya with a little wear and texture work done in Substance Painter.
You can find the Unreal pack here: https://www.unrealengine.com/marketplace/scifi-melee-weapon-pack
And the Unity pack here: https://www.assetstore.unity3d.com/en/#!/content/105508