Photo-reference:

Appears to be a THOR XM408, which is a .408 Chey Tac sniper rifle. Don't ask how I figured that out so quickly, I don't know either.

UFFR said in comment #2583431:

Appears to be a THOR XM408, which is a .408 Chey Tac sniper rifle. Don't ask how I figured that out so quickly, I don't know either.

I think that's an Intervention, famously a gun featured in Call of Duty (see: +420 and hit marker)

GranAutismo said in comment #2583435:

I think that's an Intervention, famously a gun featured in Call of Duty (see: +420 and hit marker)

As a self-proclaimed M200 expert, yep, looks like an M200 to me. Cute.

GranAutismo said in comment #2583435:

I think that's an Intervention, famously a gun featured in Call of Duty (see: +420 and hit marker)

I figured it was some Chey Tac rifle, but wasn't sure and just picked out one that looked right. Change tags as needed then.

BUT MY HOPE WILL NEVER DIE