Welcome to the forum.............the ported barrel is longer than the stock one, so the port is outside past the slide. That being the case it's a drop in type deal. So it's an easy upgrade. Something to think about is how are you going to use it........at the range to help with muzzle flip and recoil. Or do you plan on using it for SD purposes........because if you do, you will need to take into account shooting the gun at night, you are going to have that muzzle flash in front of you from the port. And that could affect accuracy and follow up shots..........may not be the best choice for a SD weapon.......something to consider........kahr offers replacement night sights on their site, meprolights priced reasonably and are pretty good !!