Moderators move if required. I think most of us know Glock magazines with a U notch are preban. And magazines with a square notch and the caliber marking about half way between the notch and the first witness holes are preban. I have been told, but can not verify that some Glock preban magazines had the caliber marking just below the square notch until Glock moved it midway between the notch and witness holes. Can anyone tell me if this is true and how would you recognize them?
Thanks, all.
Thanks, all.
