I also have one of the CVA's. I have had it for about 5-6 years now. Bought it at a pawn shop on a whim. It is .50 cal. Has the folding adjustable Lyman tyle sights in a short rib as photo from Tarawa. I paid about $150 US. I have yet to pull the trigger on a cap and load for the rifle. It is on the list.
It is very muzzle heavy and this one had a shortened stock. I have lengthened it. I will photo and show when I get it to the range.