Original "issue" Glock magazines were not full metal lined. They were intended to
bulge when fully loaded to bind in the
magwell and prevent accidental magazine droppages.
Glock started lining the magazine when
American consumers complained.
Apparently when it came to tactical reloads,
us Americans were too lazy to assist ejection of the partially loaded magazine with the index finger of our support hand before inserting the fresh mag into the well and slamming it home.
bulge when fully loaded to bind in the
magwell and prevent accidental magazine droppages.
Glock started lining the magazine when
American consumers complained.
Apparently when it came to tactical reloads,
us Americans were too lazy to assist ejection of the partially loaded magazine with the index finger of our support hand before inserting the fresh mag into the well and slamming it home.