Gravity Planet Bowgun

A huge cannon formed by the Microns Gora II, Gul, Ida, Noji, and Zori, the Gravity Planet Bowgun (グラビティプラネットボウガン Gurabiti Puranetto Bōgan) is just one of the many other named Micron combinations the Arms Microns can form when they work together. Presumably it's more powerful than the regular Planet Bowgun.

"Sonic Transformation! Ratchet's Recipe"
Gora tried to get along with O.P. long enough to wish their audience a happy new year, but their constant digs at each other got both of them riled up, causing him to summon his Decepticons and combine with them to form the Gravity Planet Bowgun. As he used the weapon to fight it out with O.P.'s Advanced Star Saber, both fighters shouted at each other that they would never get along.

Prime

 * Megatron Darkness (Voyager, 2012-07-28)
 * Set ID number: AM-15
 * Energon Crystal: HP Dark


 * Starscream (Voyager, 2012-06-30)
 * Set ID number: AM-07
 * Energon Crystal: AP Dark


 * Airachnid (Deluxe, 2012-08-25)
 * Set ID number: AM-18
 * Energon Crystal: AP Power


 * Vehicon (Deluxe, 2012-06-30)
 * Set ID number: AM-14
 * Energon Crystal: SP Power


 * Soundwave (Deluxe, 2012-04-28)
 * Set ID number: AM-09
 * Energon Crystal: SP Dark


 * Arms Micron Ultimate 5 Piece Set D - Gravity Planet Bowgun (AMW set, 2012-12-28)
 * Set ID number: AMW-14


 * Gora II, Gul, Ida, Noji, and Zori were re-colored and re-named to Gora II E, Gul B, Ida B, Noji B, and Zori CS and were sold in a box as set AMW-14.