FOB upgrades

Unlocks at DMZ level 10 ^[1]. It works like Multiplayer's Gunsmith: weapon levels and shared attachment unlocks count across Multiplayer and DMZ. The difference is cost: in DMZ you pay DMZ Cash for the base weapon, for each attachment slot (each one dearer than the last, in any order) and for each attachment; cosmetics are free except Blueprints ^{[1] [2]}.

Getting weapons. To buy a base weapon you must first extract with its Weapon Manual; after that you can buy it as often as you like (Weapon Manuals). Any weapon you extract can be customised as a single copy ^[1]. The launch list has 32 weapons in eight classes: 8 assault rifles, 5 SMGs, 2 shotguns, 3 LMGs, 3 marksman rifles, 3 sniper rifles, 4 pistols and 4 launchers (launchers take no attachments); a base M4 costs about 5,000 DMZ Cash ^[1].

Attachments. Gunsmith builds take up to five attachments plus the Apex slot (Apex Attachment) ^{[3] [1]}; weapons found in Hajin can carry up to eight. A Blueprint can be used once for free and bought back at a discount if lost ^[1]. Gunny can suggest a build, and Gunsmith discounts come with DMZ levels ^[1].