I'd give it 5 stars but... - Live Free Armory LF320 Elite Series Pistol Slide w/ RMR Optic Cut for Sig P320

This is a nice slide, let's not split hairs here. It's got nice smooth radiuses (radii?) where needed, and it looks and feels great. It even functions great, and it's a rather good price as well.

Why not five? Only because I thought something was wrong with it (and maybe there is still?) because a manual slide rack, especially at first, was nearly impossible compared to other slides I've owned, both factory Sig and aftermarket. It was difficult to install and rack, and my guess is because of the thickness of the coating (I purchased the black variant). I thought I was having an issue with my recoil spring or my grip frame or even my FCU, but I found out that, at least in my case, I needed to manually rack the slide to the rear and let it slam forward literally hundreds of times before it finally loosened up and allowed the slide to come to a stop at the completely ready-to-fire position. This could also likely be done by firing the gun hundreds of times, but you can guess which is cheaper.

Now all that said, as long as you know that this is a possibility, get this slide. It's great! Just make sure you cycle it a lot after assembly to make sure it moves freely.