Might depend on who you get, and how your local Beretta rolls ...A bold and dubious idea, you may want to give a call to Beretta/Tikka and see if they would be so kind to tell you any details about when was the last batch of such specific rifles sent out, is there one coming and so on. These being a product they probably make a batch every full moon combined with eager to be happy customer may result in someone at the corpo being extra helpful. 95% sure they won't tell you a thing but who knows...
I was after an obscure part a few years back, the kind of thing that no shop would just keep in stock. Phoned Beretta; fella I spoke to personally dropped it around to my preferred shop the very next day ...