What is the translation of the Kanji you see on the pistol?

[Karsk]

When you first get it there appears to be two kanji and I'd be interested to know what they mean.

[rawWwRrr]

A closer look on the pistol shows there are two Japanese kanji (or Chinese) characters inscribed, which appear to be "刀无". In Chinese, 刀无 (dāo wú) means no knife.

Source: http://doom.wikia.com/wiki/Pistol_(Doom_2016)

刀无 in Japanese would be "no sword".

[Karsk]

Is it a reference? Bc I dont get it unfortunately.

[Skankhunt42]

Maybe an ironic nod towards Shadow Warrior?
There is also Fallout's VaultTech-Logo somewhere to be found on a door. You can also find a Commander Keen helmet.
Many easter eggs.