Can Ghouls be killed with bullets?


In the last episode of the first season a lot of special forces with machine
guns attacked the Aogiri Tree. My question is, given the regenerative
abilities Ghouls have, can they be killed with machine guns? If they can't be
killed, what's the point of using them? And if they can be killed, what's the
point of using Quinques if you can kill Ghouls with long range weapons?




Regular bullets can't pierce most Kagune, but there are special bullets used
by CCG which are more effective.
[Q_Bullets](http://tokyoghoul.wikia.com/wiki/Q_bullets), or Bullets coated
with a thin layer of quinque steel, are enhanced bullets which do deal damage
to Ghouls.

That being said, stronger ghouls are generally resistant to even those, as we
see the top tier S and SS rated ghouls tank the bullets. Weaker ghouls are at
risk of death as much as a bullet to a regular human is if they don't have
good regenerative powers. You can see that best in chapter 60, which in the
anime is 10-11 minutes into episode 11 of season 1, as the last few pages have
Juuzo use Marudes bike to jump into a ghoul infested building, and he uses a
machine gun to punch dozens of holes into a couple of ghouls heads, even
showing them off in the manga.




Regular bullets can't pierce most Kagune, but there are special bullets used
by CCG which are more effective.
[Q_Bullets](http://tokyoghoul.wikia.com/wiki/Q_bullets), or Bullets coated
with a thin layer of quinque steel, are enhanced bullets which do deal damage
to Ghouls.

That being said, stronger ghouls are generally resistant to even those, as we
see the top tier S and SS rated ghouls tank the bullets. Weaker ghouls are at
risk of death as much as a bullet to a regular human is if they don't have
good regenerative powers. You can see that best in chapter 60, which in the
anime is 10-11 minutes into episode 11 of season 1, as the last few pages have
Juuzo use Marudes bike to jump into a ghoul infested building, and he uses a
machine gun to punch dozens of holes into a couple of ghouls heads, even
showing them off in the manga.

