Most, if not all airsoft guns have accessible and changeable batteries. On most occasions you will have to take out the battery to charge it.
Such information is not made accessible to the general public.
Yes. About one third of us that are adults do own guns. Legally.
18 for long guns 21 for hand guns
Despite belief to the contrary, in MOST of the US, there is no requirement to register ordinary guns.
Yes.
Trade
Yes
Military guns and old war guns are best for any collector. The price of this guns is always going up and each year they become more and more rare.
Probably not. as guns become smaller and lighter, the accuracy decreases, and recoil increases.
They use a lot of guns given them by the US BATF.
Like most of the US, there is no registration of guns in Texas.