Magnum Opus, the Glock golem

Magnum Opus, the Glock golem

You are fighting Magnum Opus, the Glock golem.

A robot made of guns is basically destined for a life of crime. It's not that he's bad, he's just assembled that way
Your opponent attacks ...

Hit messages:

The robot fires three bullets at you. The first bullet hits the second bullet, which explodes, igniting the third, larger bullet, in its own incendiary blast, that completely covers you.
The Glock golem's guns jam, so he settles for the old standby -- clubbing you on the back of your neck with the butt of one of his guns.
The robot made of guns reassembles itself into the form of one giant cannon pointed your way. The inevitable ensues.

It hits you for X damage.

Critical hit message:

Your opponent has a critical hit! It hits you for X damage.

Miss messages:

The robot fires three bullets at you, but they all ricochet off of each other and end up missing.
Magnum tries to fire at you, but the guns jam.
The robot aims one of its guns at you, but you point out that gun isn't actually a Glock, it's a Smith and Wesson.

Fumble messages:

Your foe fumbles! It takes X damage.

Victory! You beat up your foe and win the combat!

You gain ?-32-216-? chips.

You gain (8*Level, cap 400) experience.

You got an item: the golem's Glock (Guaranteed Drop)

Known resistances/weaknesses

Verified to have no resistances or weaknesses.

This enemy is a wandering Villain.

This enemy is a robot with an electronic brain.

Magnum opus is "great work" or masterpiece. In this case however, it probably relates to Magnum, a gun caliber larger than, or derived from, a smaller similar cartridge.
The name refers to Glock pistol.
Also mentioned is Smith and Wesson.
The description refers to a quote by Jessica Rabbit in Who Framed Roger Rabbit: "I'm not bad, I'm just drawn that way."