CSS 6.5 Grendel barrel and bolt combination. I bought this used and never built it, it's an 18" SPR barrel. Supposedly only has 300 rounds through it, but like I said, I bought it used so I make no guarantees. I'd like to get $300 shipped for it. Paypal or USPS MO
Doesn't come with Rainer Comp, unless you want it for $50.