The catalog lists more than one CX4 Storm per chambering, what is the difference?

The CX4 Storm Carbine is designed to be a companion rifle to our pistol line. For this reason we offer several carbine versions to accommodate the different magazines supplied with each model pistol. Below is a chart that will list the differences and the correct magazine each variation is designed to accept. The catalog code for each carbine will be listed in the bar code sticker attached  to the shipping carton or case. Please note that some of these catalog codes have been discontinued, they have been provided as a reference only.