Well done, you did the right thing.
The funny thing is... that I suspect that it would have been the right thing to have done in most of the USA back in the early 60's when I was a kid too. Parents vary in their views on firearms, and always have. Example: My mother grew up on a dairy farm in the deepest part of Pennsylvania, where guns were just farm tools, yet she was (and is) as anti-gun as any Brady Bunch member. If a neighbor had let me handle a rifle without her permission even back in 1963, there would have been hell to pay.