Is there a way to get in and out Escobar International without our weapons being removed?

I thought I remembered I had a sniper inside.

As the description reads, you will have a sniper inside the terminal to kill the target. If you need a weapon you can quickly snipe a guard for a pistol.

There's no way to exit the terminal without triggering the detectors(unless you manage to get a car inside and then out in some freaky stunt) but I don't see what the problem is, as when you're going out your weapons will be removed from you and be placed on the outside of the terminal, so you simply go out and collect your weapons.

I'd usually park my car next to one door, go trough, kill the target, go out trough the other door, collect my weapons, get in my car and run.