I have the PMM comp on my 365 and it has been by far the best comp combination I’ve shot and I have compared it to the 365 XMarco comp, Herrington comp, Fdez comp with ported barrel and there was no comparision as the PMM comp was the king….. until I tried this slide. This was slightly better than the PMM comp which is saying a lot. The serrations are deep, quality of the slide is excellent, much much better than the Fdez comp and ported barrel. This is such a good upgrade and the price give you an incredible value of a great upgrade. If you are considering getting this, jump on it, you won’t regret it.