How the hell did this pile of garbage get modded as "informative"? Let's examine the bullshit, shall we?
The guys who wrote the Second Amendment were very clear in their other writings that it was about letting communities (not states, and certainly not the feds) organize their own militias. In 1789, there were no national guard units. Regardless of the introductory phrase, the second part is pretty clear that no government, at any level, can restrict the rights of the people to own or carry firearms. No taxes, no bans, no magazine restrictions, nothing. Additionally, since the main body of the Constitution explicitly defines the finite powers that the states and people grant to the federal government, and none of those powers mention the ability to restrict firearms ownership, there is no such power to begin with.
The NRA is not a sportsmen's association. A handful of Union Civil War veterans founded the NRA, because they realized that the Union soldiers were horrible shots compared to their Confederate counterparts. They founded the NRA to improve the general firearms skills of the population, in preparation for defensive readiness.
I've purchased three firearms so far this year. They were all about the same price as a year ago. Ammo is definitely up though. Part of this is civilians buying up civilian production, but a bigger piece is the government buying up hundreds of millions of rounds. Additionally, commodity prices are up. Ammunition is mostly processed metals, so when the metal gets expensive, so does the ammo. Also, given the depression that is now finally kicking in (notice the world-wide drop in commodities last month, and the increasing number of bank panics) will probably not be over in 2016, because government idiots will try to legislate it away, which will only worsen it, I doubt a democrat will get elected in 2016. That would be almost as bad as electing a Republican.
Now I'm sure you have a source for your claim that over 50% of these firearms will end up stolen (perhaps your ass?), but the number of stolen firearms in the US is actually pretty low. As is our crime rate, including our gun crime rate. Yes other countries have an even lower rate, but if you take out the drug smuggling related crimes, our murder rate is pretty low.