WHAT DOES PERCUSSION CAP MEAN?

I shot the Maxim nine in its long configuration without the need of ear security and was not bothered. I shot an S&W M&P along with it using a SureFire Ryder nine suppressor and, even though I could explain to the Ryder 9 was quieter, it was not by A lot.Whilst silencers Evidently don’t get the job done like they are doing in movies, enabling ste