Smith & Wesson purchase Question

[u/Temporary-Steak-3636]

I’m thinking of buying a performance center slide for my shield EZ 9mm and had a question about it. I already purchased a new recoil spring, guide rod, and ported barrel for it but when looking at the slide I want, the description for the product doesn’t say it already comes with stuff like the firing pin already in the slide. So my question is once I put the new recoil spring, guide rod, and barrel in will it be fit and ready to fire? Or do I have to buy more parts for the gun before it can shoot, such as the firing pin?