TYRANT CNC MKI +5/4 MAGAZINE EXTENSION FOR GLOCKA(R) 19/23 Tyrant CNC's Glock Compatible Magazine Extension for the G19, the G23, and the G26 provides an innovative and technically superior alternative to the limitations of the OEM Glock magazine. Where the standard capacity of the G19 magazine is 15 rounds, Tyrant CNC's Glock-compatible mag extension raises by up to +5 rounds. Each purchase includes a 10% power spring and is easily installed with zero tools required. Eliminate frequent reloading with the Tyrant CNC Glock Compatible Glock 19 Magazine Extension. This mag extension also works on Glock 23 and Glock 26 models as they share the same bot Mfg: Tyrant Cnc