Adds the weapon "Recruit Dexter (Spread-Firing)."
This weapon is awarded to promising new soldiers. It may be a souvenir, but it still boasts excellent performance.
A shield was included for increased survival rate. The shield deploys on its own while firing. No need to overthink it.

More details on the official game page of "Additional Weapon" Heavy Load Scatter Gun w/Shield: Recruit Dexter (Spread-Firing) ...