Gunsmith Cats (ガンスミス キャッツ, Gansumisu Kyattsu?) is a series of manga and anime work by Kenichi Sonoda. The story centers on two young women, 19-year old Irene "Rally" Vincent and her partner, 17-year old "Minnie" May Hopkins.

Rally and May operate the titular "Gunsmith Cats" gunshop in Chicago, Illinois. Rally also works as a bounty hunter, assisted by May, which is the impetus behind many of the stories. Rally characterizes bounty hunting as her "hobby" though it is in fact her main source of income.

Rally is an expert combat shooter and markswoman with just about every firearm in existence, as well as an expert driver. May is an explosives expert, knowing the inner workings of and many uses of all manner of explosive devices.

In 2004, after completing Cannon God Exaxxion, Sonoda created a sequel to the original nine volume series entitled Gunsmith Cats Burst. Like the original, this manga centers on the exploits of Rally and May and was serialized in Kodansha's Monthly Afternoon magazine; the final chapter (no.51) of Burst has been published in Japan in Afternoon 's 11-2008 issue. Burst has been recently picked up by Dark Horse Comics for North American distribution, as well as re-releasing the original Gunsmith Cats in its original right-to-left Japanese orientation.

Source: Wikipedia