"Many folks assume that a new Justice will immediately cause the reversal of the Heller"
Heller went 5-4 and Kagan and Sotomayor just make it the same. So if Kennedy gets replaced in the next fours years we are toast. It is naive to think otherwise. There will be no respect for precedent. International law will carry more weight. Continuous gun manufacturer backlogs will continue, and ammunition and component shortages will occur. And the executive orders are queued-up. It is way below average as they say.