XTech Tactical MTXH&K VP9 / P30 21 Round Magazine Extender w/Spring Black 21. Featuring a custom-engineered spring and patented design this extender offers superior durability and effortless installation. Compatible with factory 15 and 17-round magazines. Specifications for XTech Tactical MTXH&K VP9 / P30 21 Round Magazine Extender w/Spring: Manufacturer: XTech Tactical Color: Black Gun Make: Heckler & Koch Gun Model: Heckler & Koch VP9 Heckler & Koch P30 Features of XTech Tactical MTXH&K VP9 / P30 21 Round Magazine Extender w/Spring Adds +5 Rounds to VP9 & P30 magazines (15rd and 17rd) Engineered extended spring for consistent feeding Quick installation with detailed video instructions Robust performance backed by innovative patented design Patents: US 11408697 B2 Package Contents: XTech Tactical MTXH&K VP9 / P30 21 Round Magazine Extender w/Spring What firearm models does the manufacturer say XTech Tactical MTXH&K VP9 / P30 21 Round Magazine Extender w/Spring is compatible with? The manufacturer suggests that XTech Tactical MTXH&K VP9 / P30 21 Round Magazine Extender w/Spring is compatible with Heckler & Koch P30 Heckler & Koch VP9XTech Tactical XTT103-BLK: MTXH&K VP9 / P30 21 Round Magazine Extender w/Spring Black 21