+1 to banal weapons, no surprise there.
First things first, he'll take some of those knives out of the bag and store them in his clothes. He's not gonna be completely unarmed the next time someone takes his bag.
...Oh, and because it just occured to me, is the gunfarmer P90 sufficiently different from a regular P90 that cleaning it like one would have poor consequences? Because Ben definitely takes care of his weapons, and would treat it like any other.
Nanami finds Ben in the middle of cleaning his new machine gun, with it mostly dissassembled and the parts meticulously spread across a table. He turns to her with an angry scowl when she interrupts with her question.
"Why's it a good idea to learn to use a gun? We just saw why! Because there's tons of people out there who do know, or don't but have strength, and when they decide to take what you have, you damn well better be able to defend yourself. It's a miracle you and miss blue-on-blue managed to survive after I got knocked out!"
He sighs, and turns back to the gun, carefully oiling a mechanism. "As for pacifists, ugh. Naive little children who've been defended from the world for too long and don't know what it's like. You know how many wars I've been in, fighting to protect people, only to come back and get yelled at for 'senseless slaughter' and 'war crimes'--as if people respect law when their life is threatened!--by the stupid little 'pacifists' I just saved? Far too many. I always see those people end up dead to bullets, or knives if I couldn't find a gun. Pacifists are like those people we just fought, they had no idea what they were doing, I mean--!" Ben slams his fist on the table, and violently turns around to shove a piece of metal towards Nanami's face.
"Just look at the grime on this! Who does this to a gun?! It's no wonder he couldn't hit a damn thing with it, nobody there had any idea how to treat their weapons! This grime-" he shakes the piece for emphasis "-is what pacifists do once they're forced to defend themselves! They get the biggest gun they can find, and then assume nobody will ever mess with them, out of fear. Then they die, because they don't have a clue!"
He pauses and scowls, then turns back to his work. After a minute, he speaks again, much calmer now. "By the way, if you see that idiot machete lady again, tell her I'm pretty angry about her wasting all my ammo after I got knocked out. She better get me more if she wants to have a happy career here."