The Marshal Shield will resemble the US National Guard Gunner, while the Bellmead Marksman can be changed to resemble the AKAN Containment Team, Murkywater Commando, OMNIA, or Ejercito Mexicano Gunner by using the options menu.
Additionally, the options menu lets you give Marshal Shields lightmachineguns.
Notes
This was only tested offline but it should work online.
The Lightmachineguns option will only work if you are the host.
This mod may be incompatible with other mods that change the appearance of the Marshal or Bellmead Shields.
The OMNIA Gunner will only have yellow blood if you have Resmod OMNIA installed. Otherwise, he will have red blood.
The model for the Murkywater Commando Gunner was taken from an old version of Resmod.