1 definition by Japanirish21

Blue 40-caliber

A type of clip, which holds 10 rounds. The full name of the mag is Taurus PT247 Blue 40 Caliber.

Example from Jadakiss's song Something Else-

You know i like to style on ya, Blue 40-caliber, butterfly doors on the triple black challenger

by Japanirish21 June 22, 2009