ULTIMAG G19 - 16-round 9x19mm magazine capacity. Product Advantages: 16 round 9x19mm capacity Two enclosed floor plates Concealable base plate installed; tactical floor plate included Visual indication of even rounds from 4 to 16 No tools needed for disassembly Multi-textured surface for enhanced grip Impact and crush-resistant reinforced polymer Multiple colors available Also available in limited 10-round 9x19mm capacity (ULTIMAG 1910R) Compatibility: Glock 19 Handguns