Who is the bad parent here?

You see that AK-47? That is what the kid at the park pointed at my son. When I told that 3-4 year-old (I assume, since he couldn't string a complete sentence together) not to point guns at people, he then pointed it at me and pulled the trigger. I was NOT amused. I told him, if he pointed it at me or my son again, I would take it from him.

His parents decided that I had no business speaking to their son and came to "discuss" my "poor behavior." I explained, that I don't think a responsible parent would allow their young* child to have such realistic replica weapons. Moreover, as a gun owner, I feel that it is irresponsible to not teach children that guns are not toys - and as such, should NEVER be pointed at another person.**

They then told me that they don't believe in guns, and that this wouldn't be a problem if people weren't allowed to own firearms...

I almost threw a fit right there. What kind of bas-ackward, moronic logic is that? You "don't believe in guns," yet you give your 3-year-old a toy gun? My tirade just getting started, they interject, "it is only an air-soft gun, it can't kill people - like your guns." I just stopped. I don't even know what to say to that. I literally gathered up my son and left.

My wife says I can't go to the park alone anymore.

* boys will be boys, and make anything into a gun after about age 6. But if you decide to furnish toy guns, make sure they aren't real looking.

** unless of course you are planning on shooting that person, in which case I hope your child has developed enough moral reasoning to make such a decision.