9MM Luger Brass Cases by Starline - 100 Pieces Starline 9mm (9x19) Brass Case 9mm brass: also known as 9mm Parabellum, 9mm Luger and 9x19mm. This cartridge is now one of the most popular pistol cartridges in the world. Specs: 9x19 (9mm Luger) 0.748 - 0.754 O.A.L... MSRP: Was: Now: $17.99