Abstract: A holster for handguns enables a variety of different handgun configurations and handguns having tactical accessories mounted thereto to be carried in a single holster configuration. The holster's sheath may be of sandwich construction, with inner and outer layers and a plurality of retention members sandwiched therebetween. The rear edge of the holster may be open so that guns on which are mounted tactical accessories of varying thickness may be carried therein. The handgun's grip is supported by the split upper rear edge of the sheath, while the handgun's barrel and action are held between the opposed, spring-biased sides of the sheath. A holster support clip may be inserted through a pair of spaced-apart horizontal slits in the sheath outer layer. The holster may worn inside the wearer's pants or skirt, with the support clip overlapping the upper edge of that article of clothing, between a belt and an article of clothing or on a belt.