Modern Warfare 4 DMZ Gun Store Locker Key [Full Guide]

The Modern Warfare 4 DMZ Gun Store Weapons Locker key is unlocked by reaching player level 16 for the Explosive Equipment Kit or level 42 for the Trap Equipment Kit, opening high-tier weapons lockers located inside Hajin. According to verified reports from Destructoid, this specialized locker ranks among the most lucrative infiltration objectives across the DMZ exclusion zone due to its consistent high-rarity loot tables. Operators cannot simply purchase the key through buy stations; instead, progression gates require players to grind profile ranks to claim either kit variant. Because the key is single-use, Destructoid emphasizes stowing it immediately into an insured inventory slot before infilling. Dropping into Hajin without protective precautions risks losing access upon elimination. Just as extraction-shooter survival dynamics reward measured preparation—similar to strategies seen in [Arc Raiders PvE Mode: How Players Are Using It For PvP [Confirmed]](/news/arc-raiders-pve-mode-pvp-practice)—clearing the locked Gun Store depot delivers elite assault rifles, tactical lethals, and rare equipment bags that give squads decisive firepower advantages against opposing extraction fireteams and patrol commanders throughout late-match cycles.