Update 1:

Buffed all three weapons. (probably way too much, I don't know what balancing is.)
Changed the rate of fire to be more accurate to penguin enemies' rate of fire.
Weapons are now purchasable from Beak Easy instead being crafted at a Tier 2 Anvil. (Thank you Armok for this suggestion!)

Possible future updates:

Adjusting the prices, I'm not sure if the prices I set are very good.