EMP-5-Rounds-9mm-for-Heckler-Koch-VP9

This is a magazine extension kit with spring, base pad, retention plate, and screw for increasing grip/potential capacity—confirm it’s the correct kit for your specific magazine model before purchase. Proper assembly and using the supplied screw (with a tiny drop of thread-locker if desired) are key; always function-test the modified magazine in your firearm to ensure reliable seating, feeding and magazine release. Be mindful of local capacity restrictions and avoid storing mags fully loaded long-term to preserve spring life.