The BSS is long out of production and parts are sometimes scarce. The good news is they don't break mechanical parts, but wood is another matter (maybe only if you are clumsy). You could find a replacement stock, but it might take awhile. I have seen four available stocks in the last 10 years, bought two of them. Own 3-1/2 BSS Sporters. The 1/2 gun was for parts. The 20's are sweet, the 12's are a bit heavy but fine for clays and waterfowl. I still carry the 12 for doves on really windy days. I own a couple of Berettas similar to the 471 (a GR3 and a 425) and I think the BSS Sporter is a better value, but the Beretta is nicer to carry in 12 gauge.
