Glock Slide Stop Lever & Spring Extended 9mm .40 S&W .357 SIG (NOT 2-pin G17 G17L G34) #7475-1. This is a factory original Glock part. It is made to the same high standards in material and workmanship as the parts that originally came in your Glock firearm. This part is perfect to replace your worn or damaged parts or to have as a spare to keep your Glock in top operating condition.