I just took possession of my new Glock 17, when I noticed something peculiar; the barrel has not been stamped with the three letters denoting when it was test fired. Instead, this data is found on the frame, on the right hand side. It has the Austrian proof house stamping, and the letters BWM, which should translate to April of 2015. Can anyone confirm that this stamping has been moved?
Probably because only the frame is registered and uppers are interchangeable between the G17/G34/G17L/G22/G35/G24 and G31. I have three G17's that have two different slides and one barrel with different serial numbers from when Glock replaced them due to cracks.