Got an Adult Red Ryder to add to my BB gun collection. Read that the stained wood easily shows damage. Wanted to protect the finish. Thinking an urethane but so many choices. Even polyurethane has an oil base and water base finish. Any suggestions on what works good, easy and foolproof. Do not care about gloss. Just needs to be clear and very durable to scratches. Would like something I can wipe on with a rag. Any replies much appreciated.