Howdy All
Just to let you know, Glock triggers are Glock Triggers and there is no actual $.25 trigger job or shooting that will smooth out a Glock trigger or make it what you want it to be (No pre, no post travel and a quick reset).
Can this be accomplished, the simple answer is YES!
But it is not $.25 and just taking a little polish to it will also not make it what you want.. There is a lot that goes into it including a set of custom springs etc.
There is actually no 3.5# connector and if you think that just putting a "-" connector in you gun is going to achieve this you are only kidding your self.
It is a name given to the "-" connector but again, there is more to be done to get the trigger where you want it.
Just ask

and ask him what he thinks of my trigger jobs.
Yep, I build Glocks for Competition, (Limited & Open) and Glocks for Carry along with special unique Glocks.
Right now working on a 38Super Glock.... good for hunting or competition..
As far as the Glock 43 goes......GREAT gun....although the trigger out of the box it heavy, it is crisp,and breaks fast. With a little work it become a very, very nice trigger in at 4.5#'s with a clean break, no under or over travel and a fast rest.
Anyone in my area that wants to look at and try one of my Custom Glocks including my 43 just give me a call.
My competition 17 breaks about 2#'s and is a convertible Lmited or Open Gun.
As far as having a Block Hand for a Glock....I build lowers that hold and point just like a 1911..
So what Else?????
That is my story and I am sticking to it...........