Shadow Systems CR920 Magazine Sleeve Fits CR920 with CR920X Magazine Polymer Construction Black. This sleeve will allow you to use the CR920X Magazine to make the CR920 grip longer. This is the solution for those who want to utilize the CR920X magazine on the CR920. The sleeve fits tightly on the magazine and against the frame for a stable one-piece feel. If you are looking to maximize the capacity of the CR this accessory is for you Specifications for Shadow Systems CR920 Magazine Sleeve: Manufacturer: Shadow Systems Color: Black Fabric/Material: Polymer Features of Shadow Systems CR920 Magazine Sleeve: Fits CR920 with CR920X Magazine Package Contents: Shadow Systems CR920 Magazine Sleeve Shadow Systems Magazine Sleeve Fits CR920 with CR920X Magazine Polymer Construction Black SG9S-00-56L