Sorry, but your post is way off the point.
The point is that “Airsoft” rifles cannot fire bullets, blanks or not. They fire 5mm plastic pellets.
Fine. If you see what looks like an AR-15 with something red on the end of the muzzle, then you should just assume that it is an airsoft gun.
In my case, I will be open to the possibility that it is a true AR-15 equipped with a blank-firing adapter.
Perhaps that is the point that the other poster was trying to make to you.