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@SkylineGTRFreak Sorry to be off-topic, but can you tell me how you made the reticle appear permanently in the video? I've been looking for a way to do this for ages.

No, that does not provide an adequate effect. These models for Battlefield were modeled as a highpoly then baked to the lowpoly in the form of a normal map. It gives the appearance of a much higher polycount. Simply taking the diffuse texture and putting it through Crazybump or something similar will only take the diffuse details and makes them bumpy. It's simply not as good. Take a look at these screens that I just made:
Normal map made from diffuse map through normal map filter: http://puu.sh/jlkme/d30497e06e.jpg
Normal map baked from the highpoly, as used by Battlefield 4: http://puu.sh/jlkkg/3d2337bdea.jpg

As you can see this makes a tremendous difference. I guarantee the normal maps for the model in this mod are floating around the internet somewhere as well.

Oh wait my bad, I only just noticed this was BF3 and not BF4. At any rate I've got a lot of normal maps for BF4 guns if you need them.

Is there a reason you haven't been able to apply normal maps to these guns? The vanilla guns use normal maps so I can't see why you wouldn't be able to (although I have no experience with these tools). They were modeled and textured with the normal maps in mind so I'd say they're pretty necessary.

If it's a matter of not having the normal maps, I do have them so let me know if you need them.