Hello everyone. Just bought my first Glock ( new mod.23 Gen3 ) and new to the forum. I am in Kalifornia and the dealer informed me that Gen4 Glocks can not be sold here. Don't know why but from posts I have read the Gen3 is favored . Anyway , my question is about the new Gen3 connector size. Are they 5lb or 4.5 in the late Gen3's and how can you tell one from the other if there is a such a thing as a 4.5lb connecter . I have seen 4.5 minus O.E.M connectors for sale (Glockmeister.com). Is there going to be a noticeable felt difference between them ( 4.5 & 5lb )? to make the change. Have read that the 3.5 connectors are on the light side for a strictly defense purpose gun.I will be doing a polish job on the trigger parts also.Like I mentioned I am new to the Glock fraternity so please forgive the dumb question. Only way to learn is ask.Thank you everyone for the help.