Because I have nothing better to do until bed time... from top to bottom:

CQC:
60 meters is a pretty sad effective range for a rifle with a red dot sight. Even a relatively huge 5MOA dot is fine out to 150 or so.

I don't know if you realize what an absurdly large number 112db of reduction is. That would make the peak impulse from a 7.62x51 about as loud as your computer fan. The mechanical action of the weapon is likely to be considerably louder.

Why do you have an electronic ignition on the under-barrel shotgun when you mention that it is pump action for reloading?
Why does it hold 10 rounds? That's adding a lot of weight pretty far forward, adding to user fatigue and making it more cumbersome to swing quickly in CQB.
Why does the front of the shotgun mag angle downward? The only possible reason I can think of is a battery, but it would still be better situated at the back for weight distribution reasons.
Buckshot is pellets; slugs are slugs; the mixture of copper and tin is normally called "bronze"; "steal" is something a thief does, "steel" is a kind of metal.

Sniper:
Putting a few more inches of barrel on a 200 meter rifle isn't going to give it the energy to make 1100 meter shots, especially with a .50 caliber projectile dragging though the air.

Standard:
80 meters effective range with a 10x scope is just plain sad, especially since you noted the 1x optic version as being good to 60m.
"variants" misspelled.

i apologize for my inaccurate numbers. i haven't don the math yet for my fiction weapons. "effective range" to me is how accurate ur everyday shooter might be with a 50 cal. like this. the weapon is however designed for super soldiers with enhanced genetics and exoskeletons. tho i will admit i think i meant 800 cause i was basing it off the m16 which fires the same effective range (seeing i have military training)
i based the 112dbs off the fact that a lot of military grade silencer can quiet a gun to those dbs so u don't need ear protection— and that an AK only peaks at about 180db. and so you know ambulance siren clocks in a 120 db. normal conversation= 60db so idk what type of computer fan u have.
the "pump action" refers to the forward handgrip that slides forward to open the eject port to expel the shell; the electric primer is fire rounds without needing a buffer or charging pin. and for the weight: again— designed for an exoskeletal suit. for the angle: its a fictional gun— make it look good in my head. that and i have a couple of NATO 20-round magazines that look like that to hold the spring.
the buck verse slug refers to the numerous variants: not copper tin mix but different materials for different types. sorry for my grammar. cs6 doesn't have spell check.
curious to know where u got "200 meters" and "60 meters" when u already said 80. and the barrel extensions doubles the length by like 2 feet. and again— drawings of fake guns.
but I'm just saying.
it may not be perfect, but i just threw them together in a couple of hours based off some doodle i drew when i 14.