WST DTM/Law Enforcement
From Halopedia, the Halo wiki
The DTM/Law Enforcement is a version of the DTM Shotgun Series used by Law Enforcement agencies. It features a solid stock and no pistol grip. The Shotgun would appear very similar to the 20th and 21st century Remington Model 870 and Benelli M3 Shotgun.
The lack of a pistol grip might be a downside in military combat, but this allows the user to hold the shotgun with one hand comfortably.[1]
