Also known as: SIG_MPX, MPX, ロジック&リーズン, ツイン・ドラゴン
A Submachine Gun manufactured by Sig Sauer, introduced in 2015. As of 2023, only a handful of real-life units make use of the weapon. In fanart, the gun is most frequently seen in use by Blue Archive's Hayase Yuuka and Mikamo Neru.