The MSN-06S-2 Sinanju Stein is a mobile suit from Mobile Suit Gundam Narrative and is piloted by Zoltan Akkanen.

The MSN-06S Sinanju Stein was developed to test the durability and follow-up capabilities of the Psycho-Frame. Two units of the Mobile Suit, referred to using the development code "Stein 01", were later stolen by the Neo Zeon remnants, the Sleeves. One unit was remodeled as the MSN-06S Sinanju and used as the flagship MS of the organization. In UC 0097, the other unit was seen in the fight over the RX-0 Unicorn Gundam 03 Phenex and was embellished with the engravings that became root for the name of The Sleeves.