This is a Glock Holster known as the Sport/Duty, model 17045.
This is a super lightweight ambidextrous holster that's popular for off-duty or plain clothes use. It conceals GLOCK pistols beneath a coat or jacket and has a special trigger guard retention device secures the pistol in the holster.
Features:
The holster will accommodate belt widths from 1.25 to 2.48
Fits Glock 17/17L/19/22/23
