Friction rifle
Runamuck considers wreckage to be fine art; he creates "art" of his own with his friction rifle. It greatly increases the effects of friction on its targets, so the slightest movement can have deadly effects, as the friction between their bodies and the molecules of the air can make them burst into flame or even melt. Its effects last for up to five minutes.
Fiction
Generation 1 continuity family
Marvel The Transformers comics
Runamuck was unable to hit Circuit Breaker with his friction rifle. If he had, it would've heated up her molecules and made her explode. Big mess!
Runamuck loves a big mess. Decepticon Graffiti!
Later, a shaky Runamuck tried to make a big mess out of an angry Scorponok with his trusty friction rifle. The only mess that was made was running down Runamuck's legs as his royally pissed-off ex-leader somehow shrugged off having his molecules set on fire and beat the crap out of him. ...All This and Civil War 2
Dreamwave Generation One continuity
While investigating Shockwave's secret lab, Runamuck gleefully toasted a hapless Mini-spy with his friction rifle. Night of the Combaticons
War for Cybertron Trilogy marketing material
The Friction rifle was Runamuck's primary weapon. Earthrise webpage[1]
Animated cartoon
Omega Supreme packs a friction cannon, which works on the same principle as Runamuck's weapon does. While it made a big mess out of enemy Decepticons, Omega probably didn't enjoy it as much as Runamuck would've. AllSpark Almanac
Prime toy bios
Flamewar wields a friction rifle.
