According to the service manuals, the 920 and 930 share the same mechanisms.

It isn't the KSM-213CCM though which is a fixed spindle, moving laser mech http://www.mcmelectronics.com/product/32-15500

The 920 ans 930 have the CDM36C-14 mech with KSS-213B/KN laser, according to the service manual.

Kris.