In most cases, rebuilt Glocks started off as floor or display models, maybe even a sample run that was made to show off the firearm. Rarely will any of them have any round count, and certainly not a high round count.

In other cases, the firearms did not pass quality control due to cosmetic blemishes. Often, these will have a minor scratch in the finish, a scuff on the frame, or an issue with the finish coat. These firearms have basically no round count on them at all, aside from a possible test round at the factory.

What Does 'Rebuilt' Mean?
Once a firearm is returned to Glock for a rebuild, Glock replaces any worn parts, refinishes the metal parts and lists the firearm as a “rebuild.” Once complete with a new finish and new parts, the firearms are sold at a discount as rebuilds, designated by Glock’s orange label.
Stay safe & have a great day!

What is a factory refurbished Glock?
What Does 'Rebuilt' Mean? Once a firearm is returned to Glock for a rebuild, Glock replaces any worn parts, refinishes the metal parts and lists the firearm as a “rebuild.” Once complete with a new finish and new parts, the firearms are sold at a discount as rebuilds, designated by Glock's orange label.

Hi and welcome. Once a firearm is returned to Glock for a rebuild, Glock replaces any worn parts, refinishes the metal parts and lists the firearm as a “rebuild.” Once complete with a new finish and new parts, the firearms are sold at a discount as rebuilds, designated by Glock's orange label. Cheers, stay safe and enjoy!