Winchester M1 Carbine bore pitting.

[jimb16]

Price, price, price. If it is a good deal then the effort might be worth it. If the barrel does need replacement then you had better be getting it CHEAP. You really need to give that barrel a good going over. I'd do the soak recommended by the others then run a piece of bronze or copper screen down the barrel to remove any leading and scale. Then give it a good brushing/cleaning and see how the barrel looks then. You are going to have to decide if its worth keeping AFTER giving the barrel a good cleaning. Only then will you know if it is worth the price. Remember, a replacement Winchester barrel will cost several hundred dollars, if you can find an appropriate one. And it may take a lot of searching.