It's really nothing that new, just a slingshot sniper. The only really new thing, that I haven't seen done before, is that the barrel slides into the body of the gun.
This also uses Killerk's SR-V2 mech and a not-so-new bipod. So as I said it's nothing really that new, but it doesn't hurt to show it off.
Tell me what ya think.
Also don't forget to
EDIT: This has gotten up to 5:00*