yes, thats a cva mountain rifle, there a vary nice gun, most that I've seen were pretty accurate. I cleaned one up for a guy that was far worse than that,had to strip the whole barrel, and file the flats down to get out the rust pits, inside of barrel was horrible, but I plugged up the nipple. and filled the barrel with liquid wrench and let it sit a few days, then ran a brush up and down the barrel for a long time to free up as much rust as I could, didn't come out great, but atleast it was still shootable, I offered him 50$$ for it, but he wouldn't sell. I bet by now its in the same condition before I cleaned it up. The nose cap is not plastic, its pewter. I finally bought one this summer at a gun show for 200$$. in really nice shape, 45 cal. flintlock. Hope you can clean her up , there a really nice gun. By the way the barrel and lock were rust browned from the factory, not blued, thats why you see a brown patina color to it, just rub it down with some oil. And also the patch box and thimbles and butt plate are not brass but steel that was browned. Your gun isn't in as bad a condition as you think, it never did look like a tc hawkin with blued barrel and brass trimmings.