The Strike Industries EMP magazine extension is a +5/6 extension for 9/.40. This magazine extension is made out of impact resistant polymer and utilizes a unique and effective locking system to ensure a solid attachment to the magazine. This magazine extension was designed to facilitate faster and smother reloads with OEM magazines. The EMP magazine extensions comes with an extended spring, the locking plate, and the locking plate screw.
The Extended Magazine Plate provides an additional 5 rounds to any G19 GLOCK magazine in addition to adding plus 4 to any G23 .40 cal magazine.
The Extended Magazine Plate provides an additional 6 rounds to any 17 Glock magazine in addition to adding plus 5 to any Glock .40 magazine.
The EMP is a great extension for an even better price.