The ShapeShift® Shell Kit for the Rock Island 1911 A1 FS 5-Inch brings expanded versatility to your ShapeShift® Modular Holster System . Purpose-built to match the full-size 5-inch barrel profile of the Rock Island 1911, this kit gives concealed carriers and open carriers alike the ability to transition their carry setup without sacrificing fit or performance. The kit includes a custom-molded holster shell that replicates the dimensions of your 1911 A1 FS with precision. It also comes with an adjustable retention unit, a rotating adapter, and all necessary hardware for setup. Whether you're switching from IWB to OWB, paddle to appendix, or anything in between, this system lets you reconfigure on the fly. Made from a tough, heat- and impact-resistant polymer, this 1911 holster shell minimizes printing and bulk while offering solid protection. It’s the ideal upgrade for users looking to maximize the adaptability of their Rock Island holsters without compromising on durability or concealment.