UNSC Marines of the 9th Marine Expeditionary Force move up to seize a Insurrectionist controlled city in the Eridanus system during Operation: TREBUCHET.
The UNSC Marine with the upgraded plate carrier and a face shield is carrying a modified MA5B with the upper shroud removed for the picatinny rail which exposed itself for a medium range optic as well as lower foregrip and a PEQ-15 style laser/light combo for an enhanced targeting acquisition.

UNSC Marines base model provided by Valkyries733: steamcommunity.com/sharedfiles&
Marines are spliced and customized in-game from various models, so they won't look exactly like the ones shown here.

Garry's Mod
Photoshop CC2021

Content belongs to 343 Industries, Microsoft Studios, and formerly Bungie.

Other UNSC Marines images.

https://www.deviantart.com/lordhayabusa357/art/Marine-Expeditionary-Force-2525-876227757