Springfield EMP

[saintsfan]

I got a new Springfield EMP 9mm and when I disassembled it for cleaning, there was a 3 digit number hand engraved into the underside of the slide. Anyone know what this is for?

 

[BayouSlide]

Usually this will match in some way to the serial number on a 1911/2011...identifies the hand-fitted barrel to its frame.