Remington 870 Cantilever Rifled Slug Barrel

Remington 870 Cantlier  Rifled Slug Barrel with Bushnell Legend Illumintaed Reticle (Center Red Dot) 3-9 x 40 Power.  Weaver Scope Rings. Scope is new, I mounted it, bore sighted, but never mounted the barrel on a gun.  I bought the barrel off this site a few years ago, never ended up putting it on a gun.  Barrel looks like it may have had rounds through it, but is in excellent shape.