The Strike Industries Aluminum Extended Mag Plate for GLOCK™ G19 adds 5 rounds to the magazine, is machined from 6061-T6 aluminum, and features a low drag/no snag design.
Compatibility is specific to OEM GLOCK™ G19 double stack magazines and it's not compatible with certain magazines like G23 (.40 Cal) 10-round or ETS magazines.
Installation requires caution to avoid over-tightening and potentially damaging the magazine, with a recommendation to consult customer support or a certified gunsmith for proper installation.