Gimlet

"No shield, no problem!"

- Sumiharu Inukai, after Masataka Ninomiya breaks the Idras' shield with Gimlet.

is a composite bullet created through the combination of two Asteroid chips.

Appearance
Gimlet projectiles are vaguely ellipsoidal in shape, with a short, luminous tail and thin circles surrounding them.

Overview
Since composite bullets were discovered by Kōhei Izumi, Gimlet could not have existed until three years prior to Chika Amatori's and Yūma Kuga's enlistment in Border.

Abilities
Gimlet doubles Asteroid's parameters, which grants it enhanced penetration abilities. It is used to breach sturdy shields or firm armor as well as to inflict damage. Thanks to their extraordinarily high trion levels, Izumi and Masataka Ninomiya can fire Gimlet bullets so powerful that they can crack the armor on the arm of Rabbit, which is capable of deflecting an Ibis blast, and the combined shields of four Idras, which is able to withstand multiple shots from Sniper Triggers, respectively.

Gimlet can be utilized in trion cube form or fired through a Gun Trigger. In the latter case, the only known specific is that the firearm is set to shoot exclusively Gimlet; in the former, the user conjures two Asteroid cubes, one from the Main and one from the Sub, and merges them into a single Gimlet cube. The process lasts between one minute for inexperienced agents and two seconds for Shooters of Izumi's caliber, during which the user is vulnerable to attack; for this reason, Gimlet cannot be used uniformly in this configuration.

Users
See also: Gimlet Users

The only known users of this composite bullet are Kōhei Izumi and Masataka Ninomiya.

Trivia

 * Like many other Gunner Triggers, Gimlet may be named after a missile: the SA-16 Gimlet, an early version of the . Alternatively, it may be derived from the homonymous.
 * A is also a drilling tool.
 * Gimlet was described as doubling the "structure" of Asteroid, the same term used by Jun Arashiyama to signify the combination of a Gunner Trigger's power, range and speed parameters.