NTW-20 Sniper rifle

As a Crossbow replacement if possible, or a SWEP is good.

I’d do a search for it here, but The damn engine is out.
I was watching District 9, and saw some interesting resemblances to the Halo Sniper rifle, and I figured it would be interesting to have a weapon made of this South African AM Rifle. We already have the Barret M89 or M90 Sniper rifle, and the CheyTac Intervention from Modern Warfare, so I think it would be cool to have this too.

http://l33tawpcamper.files.wordpress.com/2010/01/ntw-20.jpg

http://conspiracyx0.tripod.com/weapons2/NTW.jpg

I know there are no real models of this weapon, OR I just didn’t search properly, but Don’t yell at me if I didn’t search properly.