I'm glad to say that Glock hasn't been shy about providing enthusiasts, like me, with extended upper assemblies. Model options have included the 9 mm G19L and the competition-style G34 ...

WITH ONE TRIGGER PULL, THIS HANDGUN IS FIRING 20 BULLETS IN A SECOND. IT’S POSSIBLE BECAUSE OF A GLOCK SWITCH DEVICE. THE SWITCH WORKS BY BLOCKING THE MECHANISM IN THE GUN. THAT REQUIRES A TRIGGER ...