- "Semi-auto sniper rifle. Fast firing with larger ammo pool. Reliably eliminates enemies with 2 shots. Hold LSHIFT while ADS to steady."
- — In-game description
- Ammo (Blackout): .338 Cal
- Operator Mod: None
- Country of Origin: Santa Monica, USA
In Zombies, the SDM can be obtained through the Mystery Box in every map. When upgraded via Pack-a-Punch Machine, it becomes the IT-5 LYT with the base magazine size increased to 24 and the reserve ammo increased to 144. It is unlocked for customization in the armory at level 17.
- "Santa Monica, USA" is written on the right side, as seen when inspecting the SDM.
- "SURGEON ARMAMENT", ".338 CAL SPR", "TA0082718" can be seen behind the sights, most well seen during ADS.