How can I get the DLR2 futher open ? Do I remove this split ring. And if I do what comes lose ? Can things spring out from the inside when removing ?

DLR2 how does this go futher open ?-p7240475.jpgDLR2 how does this go futher open ?-p7240478.jpgDLR2 how does this go futher open ?-split.jpg