This was the first time that Ves made a spiritual weapon.
This was not a physical gun that just happened to possess the ability to harm spiritual targets. He was already familiar with those kinds of weapons and even made a few of them himself.
The Amastendira was the first weapon he came across that could harm spiritual entities, though it did not particularly excel in this aspect.
Ves no longer needed to rely on the Amastendira's mediocre threat against spiritual entities because he had Blinky now. His companion spirit was practically a natural opponent against any enemies that relied on spiritual energy to fight!
Later on, he learned that masterwork mechs and weapons also possessed the power to harm spiritual opponents by themselves. Ves hadn't exactly figured out why this was the case, but it was a handy discovery that gave him a bit more confidence in confronting troublesome opponents who claim to be deities.