Doesn't bother me if they do it without endangering others... Who knows, maybe they are getting ready for a Magpul class (or just got back).
I actually love to blast away at cans and clay pigeons, but am more frugal and serious about training these days.
For most, I believe, firearms are a hobby. Luckily hobbies are allowed here in the US, otherwise there wouldn't be recreational golf, skiing, etc.
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