TTI +10 Ultralight Base Pad For Glock PCC 9mm 30/31/33 Round OEM Magazines**Not compatible with GLOCK 19 magazines** *Remove the OEM polymer retaining insert before installation* Taran Tactical Innovations Glock 9mm +10 Lightweight PCC Base Pad for Glock 9mm 30, 31, and 33 round magazine bodies. These mag extensions are ideal for pistol caliber carbines that take Glock magazines. Our +10 Lightweight Base Pad bumps the capacity up from 30, 31, and 33 to 40, 41, and 43 rounds for PCC Division. GLOCK 9MM ULTRALIGHT +10 PCC