[alecsmart1]

Have a look at this documentary-

http://m.youtube.com/watch?v=DconsfGsXyA

It's extremely scary. In most countries, the right to owning ammunition is not allowed. The thought that in the future, my neighbor could make a gun using a home 3d printer makes me feel very unsafe.

[anExcitedBeast]

Your commute to work every day is much more dangerous than an armed neighbor will ever be.

Source: survived countless armed neighbors and lost plenty of friends to cars. Also, statistics.

[growupkids]

Your neighbor can build a bomb right now with beauty salon supplies. If you think restricting things is going to make you safe, you should be terrified.

[njharman]

Why do you have irrational fear of your neighbor? That if they posess something dangerous you feel unsafe.

Maybe you should realize your neighbors aren't out to get you.