Another helpful video from Cley Films showing you how to disassemble the Glock 17/34 GBB Pistol Trigger Mechanism and identify the parts as well... "In this video I will show you the parts inside the trigger mechanism of a WE/TM/E&C Glock 17/34 Airsoft Gas Blowback Pistol with Parts Identification. Enjoy! No Real Firearms in This Video. Airsoft Only."