Abstract: A wearable holster for concealing a firearm on a user includes a panel having a forward face, a rear face and an upper edge. A support extends laterally from the forward face and defines a slot sized and shaped to receive a barrel of the firearm. The support does not cover a handle of the firearm. A retainer retains the firearm in the slot. A flap extends outward from the upper edge of the panel and removably covers the support and the handle of the firearm. A quick release fastener for releasably securing the flap in place over the support and the handle includes a first element mounted on the panel and a second element mounted on the flap. The fastener enables quick removal of the flap and access to the firearm.