That's not a machinegun, that's a sniper rifle.

No that is a heavy machine gun.

Otherwise it would not have a hand grip on the top

It's a sniper rifle in-context. The story deals with a sniper nun.

And heavy machineguns don't have grips in the first place. Good luck finding a grip in an M2 or a DShK

is a heavy machingun

According to the planetarian novel, this is a fictional "sniper railgun".

Sniper Railgun, eh? Is this the magnetically accelerated kind, or the cartoon kind? Regardless, it looks awesome, and british soldiers put a scope on SA-80 assault (L86-A2 LSW) weapons and use them for snipers...so it CAN be done!

Guns herp guns derp guns hurr.

What is it about guns that causes this sort of dumbass conversation every single time? You want to hear something ironic? The CoD Modern Warfare wiki has barely any of this.