Bah. If I can't have bees, then my preferred weapon would be something with low recoil and a high rate of fire.
Once you get up into the 3,000 round per minute territory, even a blaster would do the trick. At that speed, a .22 caliber weapon will put out something like a kilogram of lead in a minute, so even if one projectile isn't all that powerful, 49 of its friends will impact in the second immediately following. Easy to control, and you can overwhelm just about any defense by spraying it back and forth.