This SIG P320 extension adds 6 rounds to your magazine. Easy assembly. Works on SIG P320 double stack Mags 9mm and 40. *Does not work with the M18.
Stock Spring is all you need.
Black hard anodized aluminum.
*CAUTION* Our bases and extensions WILL have problems when dropped repeatedly on concrete. They are Hard Anodized, but they are still aluminum parts that will take on damage. When installing the extensions, only tighten the back plates down until secure. The plate may crack or break if tightened down too much.
MADE IN THE USA KNOW YOUR STATE AND LOCAL LAWS
WARNING- The P320s have a chance of over insertion if you slam a mag in with the slide locked back. This can bend your ejector.
