This is early concept of this gun on a day where i've drawn on pixel art.
Yet, only three weren't finished due I've being move on my old stuffs when discovered another games, such Terraria and others in 2011.

Top Gun/ MG256 Carbine Aka Rebra Rifle (Completed)
A unusual issue as selected heavy fired machine gun within better accuracy for Use of submachine rounds (44m)
Its nickname caught from it's operating mechansim, which i can't tell what 's how it functions

Middle Gun / Prototype 1568A (Unfinished)
Design of the weapon to restore its rounds after when fired, but never release its prototype stage, which is it'd failed to replicate the bullets when magazine is empty due a low budget by someone secretly taking their banks. I can't tell that much about. Yes, This appear be as bootleg of MAC.

Bottom Gun/ Genetic Gun
I'd drew it for fun.

let me know about your throught on it