Rifle is a subset of the word gun Bob. A gun is a normally tubular weapon or other device designed to discharge projectiles or other material. Rifling is added to improve accuracy and range. Considering that the weapons found were in hand luggage, I would assume most of them were pistols (with rifling) anyway.
Statistically, the presence of so many guns in the USA makes them far more dangerous to US citizens than the terrorists the laptop ban was meant to stop. While I assume you believe your 2nd Amendment rights are inviolate; I would suggest trying to disarm toddlers and banning lawnmowers, if you want to save more American lives, because they are killing more of your citizens than international terrorists, but still a fraction of the numbers killed by retaining the good ol' 2nd Amendment.