What is missing from Beldin's and Ribit's excellent solutions is the final piece of equipment that should be part of the anti-rape package.
A good field knife used for skinning and bringing meat home to the table by hunters. In other words, a very sharp hunting knife.
WHY you ask?
So that after you knock the perp down with a firing from your preferred weapon of choice, you can then help this MOOSLIM rapist out and take away his urge to ever rape again if he survives the firing of the bullets.
You can calmly walk over to the downed rapist, unzip his pants, and CUT OFF HIS Penile projectile with one clean cut. BURN IT right next to him so he can smell it and see it.
He'll never rape another person again....
A Public Service action all women could appreciate....