Why did you add a 3d mesh of the CoD4 Marine Sniper model in? That just looks completely out of place.
The beep was annoying, but that's been touched on already. Typically, loud, abrupt noises get annoying after a while, but it's solved by keeping it quieter.
Clips didn't look like blatant hacks this time around, so that's a plus. You should keep non-action times to a minimum if the clip is only a minute or so.
The artificial UI you added in looks a little out of place because it's significantly clearer than the game footage. In this case, lower quality might have made it blend in a little more. Concept is overdone too, but you executed it fairly well.
The red border just looks odd for the color scheme you used for everything else. A light blue would of been safer, and fit more with BF3's color scheme.
Overall, it was bearable to watch. There's definitely ways to improve, but the final product was by no means bad. A little above average would be my opinion.
7.5/10