ported barrels

Here it is folks...one of the first Gen4 "C" models here in the USA...that I know of anyways... As some of you may know, Glock had discontinued standard production runs of all Gen3 "C" models, and for years now I had hoped they would eventually made a Gen4 "C" model... Internet rumors hinted at...

Hey guys, I have some questions about ported barrels and compensators. 1) If you use a ported barrel do you lose pressure slowing the speed in which the bullet goes out the barrel? 2) Can you use compensators and ported barrels at the same time? 3) If a ported barrel reduces muzzle flip why...

I'm pretty new to Glock. I have a model 31 and love it. I was told that I could drop a .40 cal barrel in and run it a bit cheaper. I found a barrel on the cheap, but it is ported and my slide is not. I am thinking I should not run this barrel in my weapon. Thoughts? Thanks in advance. 4M-