Unsure how you defend against something moving at .3c, or counter an amalgam of the best traits from thousands of species put into one thing after decades of splicing and testing. Also, now that conservation of energy is complete, it is only a few years before we can fabricate mass, thus making all natural resources pointless due to our infinite amount of freely-creatable materials.

if it just looks like a musket, can it not be a musket? Can it be an infinite energy harnessing uberweapon capable of killing from thousands of miles away?