Laser arm cannons are standard weapons in the distant future.
They are first seen in "The Time Traveler's Pig" when Mabel and Dipper travel to the future. During the Time Baby's rise to power, the resistance against him utilized these sidearms in their core arsenal. After their defeat, the Time Paradox Avoidance Enforcement Squadron, under the Time Baby's command, opted to make use of the weapon. Later in the episode, when agents Lolph and Dundgren travel back in time to the Mystery Fair to confront Blendin Blandin, Stan taunts them and dares Lolph to try and dunk him, and the officer uses his cannon to shoot the target, sinking him.
The armament's basic structure is akin to that of a modern day gun, albeit with a thicker barrel in the form of a gray cylinder, with a black handle, trigger, and scope. There is a power meter on the side, the scale ranging from yellow to orange to red.
- 109. "The Time Traveler's Pig"
- 208. "Blendin's Game"