As soon as I read "Guns guns guns" I immediately thought of Balalaika, Revy and Roberta :D.

I choose Black Lagoon. Unfortunately, we probably won't get the ending of this manga, but if you're looking for an intense, well-written, abstract and brutal story - this is something for you. An additional aspect is beautiful women with bitchy eyes.

The plot tells about a modern pirate city and its inhabitants. The citizens of Roanapur are a collection of mafia, secret agents, yakuza, triad, ex-KGB military and other organizations that do bad things in our world. They engage in murder, rape, theft, trade and smuggling of goods.

The great advantage of the plot is the lines. Now I can't find confirmation of this information, but apparently the author draws all weapons very faithfully. And since there are more shootings than fillers in Naruto series 1, there are a lot of them.

What's more, it's absurd. We have a full cross-section from cute child murderers to the fucking Terminator that everyone runs away from to avoid being massacred (best of all, it's a sweet maid).

And the plot. This wouldn't be such a good series if it was just a comedy. To show the contrast, we have brutal scenes in which the hero or heroine has to exert their brain at 100%. Why? Because they are at risk of death and if they make the slightest mistake, they will have water leaking from the back of their necks when drinking water. It's a pity that we will never get a continuation of this manga ;(.