I too am a Glock armorer and have installed a lot of connectors. Many shooters want to decrease fthe trigger pull for bulls-eye or IDPA shooting. Although I don't recommend changing it on a PP gun, this is an easy change. I recommend getting the PTOOMA manual which provides step-by-step directions on the proper method of changing the connector and the entire breakdown of the gun.
Link Removed. Do not polish it or do the 25 cent trigger job as it changes the pull weight unpredictably.
Glock comes with the 5 pound connector standard. The 3.5 pound connector has a reduced angle so the birds-head on the trigger bar drops smoother, releasing the striker with less trigger pull. You can find a number of connectors at Lone Wolf Distributors from LWD, Ghost and Glock (
Lone Wolf Distributors - Product Detail - LWD Connector 3.5 lb - $14.95). For a complete trigger bar check lone Wolf also (
Lone Wolf Distributors - Products - Glock Trigger with Trigger Bar). You'll also need the Glock tool. You can find the disassembly tool, PTOOMA manual and gunsmith bench mat here -->
Lone Wolf Distributors - Products - Tools.
DO NOT TRY THIS WITHOUT BUYING AND STUDYING THE ENTIRE PTOOMA MANUAL FIRST.
Last time I saw the Glock guy at the Middletown gun show he was only carrying Glock factory parts. Lonewolf is where I get everything for my Glocks. The have knowledgable customer support reps if you have a question and very fast shipping. Highly recommend using them.