Henning's PRO CARRY Magazine Extension for ALL SIG SAUER P320. This new and innovative magazine extension is the PERFECT way to extend the magazine capacity for ALL Sig Sauer P320 9mm / 40 S&W magazines. It is designed to work with carry magazine wells (funnel) found on the AXG PRO. It also features a very handy magazine grab feature to be able to pull the magazine out even with a magwell. You can load 20 + 1 rounds of 9mm using factory follower/spring on your 17-round magazines.
This also fits 9mm 15 round, 17 round, and 21 rounds magazines as well as all the 40 S&W magazines. For 40 S&W it is a Plus 2!
The extension comes with a side cutout to enhance magazine grab/pullout. This product is CNC machined from 6061-T6 aluminum and anodized in black. The spring-loaded detent is made from stainless steel and finished in black nitride for long life.