I ordered my GSSF Glock the other day. It cost me $35 to upgrade to Gen 4. I thought while I wait for it to arrive, I'd go ahead and order the fiber optic sights for it. They, the FO sights, arrived today. The Glock will be another 19 weeks. These are HIVIZ GL2009 specifically for Glock.
On the back. The red lines are mine but the bold typeface is HIVIZ.