Hi all. I am new to this site, new to firearms and new to CCW. My weapon is a XD 9mm 4" service model all black. I just have a few questions. So how reliable is the striker block safety? I plan on carrying, when I get my CHL license in, loaded with one in the chamber for obvious reasons. I am just a little worried on if my gun gets bumped hard if it will go off. I am sure it won't but I just want to know if anybody has had any accidental discharges because of this. Also does anyone know of a company that makes custom floor plates for magazines. I am a huge Metallica fan and I want one with the ninja star logo.