Anyone can make a mod look like this:

 

 

 

Thank You 

 

I would! (If I knew how to script lol)

That is actually a prone position, not crouching, and I don't think it will offer any benefits to your actual shooting as if you look in your weaponinfo.xml you will see

 

<aiming accuracy="0.5">

<offset         x="0.15" y="1.0" z="0.55"/>

<crouchedoffset x="0.2"  y="1.0" z="0.05"/>

<reticule standing="0.65" ducked="0.55" scale="0.3"/>

</aiming>

 

You would probably still be using the regular offset, you might be able to set it up to use Crouched, but as I say it won't improve, and in MP others probably won't see it.