Hi, I'm thinking of replacing the connector and spring on my gen4 G19 and I was wanted to make sure the parts will work in the gen4. I'm thinking of getting the 3.5lbs connector and either the NY1 module or the 6lbs trigger spring. I was also wondering what the difference in feel would be between the two springs (I may buy both and try them out). The reason I'm thinking of changing out the parts is my stock trigger is too stiff at the breaking point for my liking. This is a carry gun if that factors into your recommendation at all.