Solo · 1–2 Players · Large hammer
How to build the L81 Mortar
Placement, protection and cost of the L81 Mortar: 91 supplies on the menu, large hammer, FOB required.
231 → ≈308 · 1 pallets · $9,900
MortarData only
Module · Duo · 431 supplies · Large hammer
Mortar pit
An L81 mortar in a one-block-high ring of small blocks with a rear gap and a two-wall screen behind it. 91 + 140 + 92 supplies.
Data only· Patch 0.11· Sep 18, 2026Updated Sep 18, 2026
- 2–3 Players
- Large hammer
- Support level 8
- FOB required
- 12 min
- Support 8 · placer
- Driver 3 · logistics
Generated preview1 cell = 1.5 m
323 menu · ≈431
Show as table
| # | Structure | x,y | z | Phase |
|---|---|---|---|---|
| console | Forward Operating Base | 19,19 | 0 | 1 |
| mortar | L81 Mortar | 25,19 | 0 | 2 |
| pit-n0-n1 | HESCO Block (Small) | 24,18 | 0 | 3 |
| pit-n0-n2 | HESCO Block (Small) | 25,18 | 0 | 3 |
| pit-n0-n3 | HESCO Block (Small) | 26,18 | 0 | 3 |
| pit-n0-n4 | HESCO Block (Small) | 27,18 | 0 | 3 |
| pit-n0-n5 | HESCO Block (Small) | 28,18 | 0 | 3 |
| pit-e0-e1 | HESCO Block (Small) | 28,19 | 0 | 3 |
| pit-e0-e2 | HESCO Block (Small) | 28,20 | 0 | 3 |
| pit-e0-e3 | HESCO Block (Small) | 28,21 | 0 | 3 |
| pit-s0-s1 | HESCO Block (Small) | 24,22 | 0 | 3 |
| pit-s0-s2 | HESCO Block (Small) | 25,22 | 0 | 3 |
| pit-s0-s3 | HESCO Block (Small) | 26,22 | 0 | 3 |
| pit-s0-s4 | HESCO Block (Small) | 27,22 | 0 | 3 |
| pit-s0-s5 | HESCO Block (Small) | 28,22 | 0 | 3 |
| pit-w0-w1 | HESCO Block (Small) | 24,19 | 0 | 3 |
| pit-screen-e1 | HESCO Wall | 31,17 | 0 | 4 |
| pit-screen-e2 | HESCO Wall | 31,21 | 0 | 4 |
Cost
- Menu
- 323 supplies
- ≈ To finish
- ≈431
- Starting stock
- 1,250 · Covered by the kit stock
- Pallets
- 1 (0 extra)
- Ural trips
- 0
- Cash per match
- $9,900
- One-time unlocks
- $75,000
- Builders
- 2
Modules used
Parts list
| Structure | Qty | Each | Menu | ≈ To finish | Hammer |
|---|---|---|---|---|---|
| Phase 01 · 0 → ≈0 | |||||
| Forward Operating Base | 1 | 30 | 0 | ≈0 | Small hammer |
| Phase 02 · 91 → ≈121 | |||||
| L81 Mortar | 1 | 91 | 91 | ≈121 | Large hammer |
| Phase 03 · 140 → ≈187 | |||||
| HESCO Block (Small) | 14 | 10 | 140 | ≈187 | Small hammer |
| Phase 04 · 92 → ≈123 | |||||
| HESCO Wall | 2 | 46 | 92 | ≈123 | Medium hammer |
| Total | 18 | 323 | ≈431 | Large hammer | |
Build phases
Anything taller than one block inside the barrel arc detonates your own shell. The ring is small blocks only; the tall screen sits behind the pit, outside the arc, toward the infantry approach.
Console first
Deploy the FOB and take the Medium hammer from the console. Everything below is placed relative to the console at cell 20,20.
Mortar
Flat ground, barrel arc toward the target sector, five cells from the console. The blueprint drops a ring of planks.
Low ring
Fourteen small blocks around the pit, one high, with a two-cell gap toward the console for the ammo runner.
Screen
Two walls behind the pit block the sightline from the approach. Test-fire before you add anything else.
Engine notes
- HAMMER_ESCALATION · phase 3
- HAMMER_ESCALATION · phase 4
- DISPUTED_VALUE
In-game proof
No in-game proof yet. Built it? Send a screenshot.
Sources
- steam-skivin
- allthings-cluster
- wardogs-zone-db
- fobplans-research
- Verified on Sep 18, 2026, Patch 0.11 · Methodology
Any · Flat · Mortar
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