ALIEN GEAR CORE CARRY KIT S&W M&P SHIELD 40 CALIBER LEFT HAND The Shape Shift Core Carry Pack is the foundation of the Shape Shift Modular Holster System, and includes everything you need to carry in four distinct ways. In just a few quick steps, quickly transform the Shape Shift into an IWB holster, appendix carry holster, OWB belt slide, and OWB paddle holster. The Core Carry Pack also includes a bonus Holster Mount, so you can attach your Shape Shift to a variety of surfaces in seconds.