This Classified Sentry's Call build provides PvE support players the ability to dish out quick headshots while being in close proximity of NPCs while using the shield as cover. Critical Hit Chance and Critical Hit Damage do apply to pistols along with Damage to Elites and Enemy Armor Damage. The First Wave X-45 is ideal for this setup as it has a base starting magazine of 15 rounds and can reach into the low 30 round range through using an extended magazine. Move in close with the ballistic shield active and use the X-45 to quickly mark NPC targets for both you and your squad mates. The high skill power and electronics along with Coolheaded allow for quick skill cooldowns for a nearly endless pulse. With 9k Firearms and using the ballistic shield along with ballistic shield damage mods, this pistol-centric build is capable of dishing out large amounts of DPS. Once the Sentry marks start stacking up, this build reaches insane levels of pistol damage.