A couple of days ago I was looking at my S&W model 36-2 and realized it doesn’t have a serial number on the frame above the model number. I am pretty sure it has the S/N on the butt of the gun but my Hogue Monogrip covers it up. Am I violating the law because of this? I seem to recall that covering the serial number is illegal. If so I need a different set of grips.