She's quite comfortable with the phallic imagery inherent in the weapon. It's an archetype. Chicks will play with dicks, and will also have a pile of fun doing so. For Ilsa, one of the greatest pleasures of playing with weapons is her sense of accomplishment and mastery over the machine. She has become a serious shooter, regularly going to her local range for practice and training.
Target shooting is hot in and of itself.
It's an incredible full-body experience. You get this sensation throughout your body, this vibration. And vibrations are what sex is all about anyway. Situations that would be repulsive in reality can pack a huge sexual punch. It titillates because it walks that line.