I am new to this site but I have some good experience with Glocks as an armorer for my Department. I went as far as to ask the Master Instructor of my last Glock armorer class and he said he had not seen it before. I came across this G22 in a private sale. It's an older G22 with an ABU prefix, but what made me buy it was the lack of serrations on the right side of the slide. Anyone ever seen this before? Any information would be appreciated. I have asked a few times in the Glock forum on AR15.com and was accused of photo shopping the picture. I assure you this is not the case. Thanks. I'll post pictures in a few minutes, I can't figure out how to cut and paste the link on this damn apple computer.