If you shoot an HK VP9 and frequently find yourself wishing your magazines would last just a little longer before locking the slide back on empty (and who doesn’t, really), then XTECH Tactical has good news for you. They are now shipping their +5 Mag Extender for the VP9 and, later this fall, they will be offering complete 20 round magazines!
The +5 Mag Extender is designed so that the inside dimensions of extension match the inside dimensions of the magazine perfectly. According to XTECH Tactical, this is critical to reliability with magazine extensions. The +5 Mag Extender installs without tools. It comes with an extended spring.