RE: Wife bought me a Glock 21! Backup deer gun?
 

If you' re interested in a 3.5# trigger, look no further than Lone Wolf Distributors. I just bought the 3.5# trigger connector for my Glock 19 and installed it myself in less than 5 min. Cost was $27 like you mentioned and it was an excellent mod to reduce trigger torque and resulted in increased accuracy.