small errors, or things that aren't in AC, but should be

[Goat]

if you play FM3, you will clearly see a spent cartridge being ejected out of the pilebunker mechanism. in later titles though, you will hardly notice it.

Haha. You're right, I never noticed that a spent cartridge would come out everytime you use it.

Magazine on Back weapons??Is there even one??

I think one of the Linear Guns have it. Though it's pretty useless since the other Linear Gun (Evangel's) doesn't have one, yet it acts like a more efficient RL and the firing intervals of the two back guns when compared are actually insignificant. Mag reload time ruins it.

In AC4,lasers are weaker on longer range agreeing to the fact that lasers disappear with air.

Now Fromsoft has made something interesting that makes sense.

anyway how the other handguns, such as the Wraith is small, but has a much ammo, also some other weapons that is small, but has a much ammo.

It's probably because the ammo is also small.

EN weapons should be like the EN EO cores. Once depleted, they can recharge.

Maybe EN EO cores had the chance to recharge because they get the EN supply from your AC's generator since it's directly connected to your AC's body unlike arm weapons, they're probably held just like that.