Glock Mag Ext Insert 9/40/357

This is the correct item I was looking for when I was trying to add an extension to my G 26 all Glocks come with their own insert plate majority of all are compatible but not when your trying to add a base extension this was perfect and I'm sure it'll work with other double stack mags excellent part Glockstore I love y'all have every part needed if something was to breakdown lose or upgrade