According to OnPointSupply Glock’s factory in in Smyrna, GA are unable to keep up with overwhelming demand. The factory is running two 8 hour shifts and producing 4000 pistols a day!
They have started to import Glock 19 pistols from Austria to meet the demand. These pistols can be identified by the Austrian proof mark which is an eagle next to the letters NPv (“Nitro Powder proofed”). Austrian guns are proofed with loads that are 30% more powerful that regular loads.
These photos are from a Glock 19 offered for sale at the GlockTalk forum: