So this piece of fuck:

I refuse this thing has a magazine capacity of 60 rounds. 32? Perfect. 60? Like wtf dude why would you have 60 round magazines.
And also the MA5B doesn't have any iron sights, or more importantly, scopes for rails or any of that useful shit. sure, the ammo counter is fine, but what's the point if I can't aim the goddamn bitch.
In the lore, it is mentioned that the Marines have HUDs that indicated exactly where the rifle is pointing and can zoom in if they squint, but what if you're caught in a situation where you can't put on the helmet? What if, in a real combat zone where you shit gets all dirty and nasty you helmet fails?
Like this makes sense:

Semiautomatic? Check
Top and Bottom Rails? Check
Like that makes sense. And it has a scope too so what's the fokken point of the Heads up Display.
While we're on Halo let's see this thing.

"Yo man, you know how most rocket launchers only use the rockets themselves as ammunition, reducing packaging size, weight and cost?"
"Yeah bro"
"How about we design a rocket launcher, that instead of reloading with rockets, you reload the tubes too."
"Oh damn that's solid. Maybe next time we can design a rocket launcher that when you reload it, you just use an entirely new rocket launcher."
Post other shit from science fiction that rustles your jimmies.