[SDGlock23]

I need your help guys. My cousin has a mil spec 1911 and I used to have a bitone xd 45 that has what looks to be like etchings inside the slide. Looks like initials or a number. Its pretty crude looking, as if done by a handheld drill or something. Now I've had other xds that don't have this. Can anyone explain to me what it is for and maybe why some don't have it?

 

[warmachine]

Pictures would be pretty helpful. I've never heard of that or seen it in any of my 4 XDs.

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[ajamesp51]

All XD's have some hand type engraving/etching on the extractors after fitting the engrave/etch part of the serial number. I have also seen some that were on the slides before also. A guess would be the pistol was pulled from the line as a sample or for quality control issues. And after testing or fixing they quickly engraved to show something was done/passed.