SureFire High-Capacity Magazines can provide the operator with some clear-cut tactical advantages, including increased initial firepower in ambush and active shooter situations, less downtime and target distraction in a firefight, the need for fewer reloads overall, and less bulk compared to drum magazines. Common SOP is to keep a SureFire High-Capacity Magazine in the weapon for initial contact and standard 30-round capacity magazines for reloads.