Now before you go off with the quick "no they are the same, just longer" I am not new to Glocks. I have a few
But when I put my 27 in a kydex holster that I have used for 23 as well as 35 it is super tight! So tight I cant draw it one handed (have to hold the holster with one hand and pull weapon with other)
I took a micrometer to it and can't find any obvious differences.... maybe I am looking in the wrong places.