Neutron cannon

Uh uh. I know what you're thinking. "Did he fire six shots or only five?" Well to tell you the truth in all this excitement I kinda lost track myself. But being this is a neutron cannon, the most powerful handgun in the world and would blow your head clean off, you've gotta ask yourself one question: "Do I feel lucky?" Well, do ya, punk?

A neutron cannon is a fairly powerful weapon.

Fiction

Earthforce

After a group of Decepticons lost a battle with the Dinobots, Runabout stayed behind while the rest retreated. He pulled a neutron cannon on Grimlock and claimed it was powerful enough to kill Grimlock at that close range. Grimlock pointed out that he was too close and would get caught by the recoil. Runabout took a couple of steps back, over a nearby cliff. Two Steps Back!

Shattered Glass

The Ark was equipped with a neutron cannon. As the ship entered into battle with the Nemesis, the cannon was fired, but missed the Decepticon ship. Astrotrain and his team of Mini-Cons landed on the Ark's hull and damaged the cannon's control struts, resulting in it damaging the Ark's own engine array when it was next fired. The ship subsequently crashed on Earth. Do Over

Notes

• Runabout's actual weapon sounds similar to a neutron cannon. It is a "particle beam rifle" that emits a high-energy beam of neutrons.
• However it is not Runabout's actual weapon that he pulled on Grimlock. His actual weapon was featured earlier in the story and was drawn like his The Transformers Universe profile.