It's a red x gun! Cutting and pasting the link works - looks like a Hollywood gun.
I thought it might be a dressed up Barrett because forward of the receiver doesn't look right but then looking at the magazine it looks more like .308 sized - like an M14's.
The magazine looks like it's welded to the receiver with three short welds and there's no ejection port on the side facing the camera - which ought to be there for a right handed shooter.
The scope looks more like a spoting scope rather than a rifle one from its size and shape. Weird mount too - too high but then it's got that adjustable cheek piece.
There looks to be something under the handguards - a bi-pod folded back possibly?
The tube running across the top of the rifle looks odd. It flows all the way to the rear of the receiver rather than stopping forward of the magazine. Looks too big to be a gas tube/operating rod guide. There is a second tube under the top one but doesn't look right either.