Putting aside potential missteps within Vista, their stock, along with other firearms mfg's will turn down as soon as there are signs that demand and supply are coming into balance. Further, putting aside political intervention, typically as supply starts to catch up, there are many orders that are cancelled because the buyer had double/triple ordered. This causes demand to quickly drop below supply - really driving prices down.
I think an interesting question is whether demand for ammo will continue at a high level even after gun sales start to taper off. I.e., there could be unmet demand for ammo from the people who had already bought a gun. If I have it right, Vista is focused on ammo/components and not firearms themselves.
So, if you don't get out early enough, you can lose non trivial amount of capital.
And, of course, the wild card is what happens politically.
Full disclosure. I only own mutual funds and have no idea what they have bought/sold or are buying.