S & J Customs Oversize Mag Button - This is a great add-on that allows you to release that magazine without having to change your grip. Easily installed by drilling and tapping your factory mag release with a standard 6 x 32 tap available at any hardware store. Can be installed on regular or extended Glock factory mag release. Note, this button will not fit other manufacturers drilled and tapped releases such as STI, SV, etc. Also available in a combo pack which includes the oversize button, and a Glock extended magazine release which has been drilled and tapped. Simply replace your existing mag release with the new one and screw on the button. The mag button is $22 and the combo is $39.95.
SJC Glock Mag Button