diff --git a/Resources/Prototypes/_NF/Entities/Markers/Spawners/Random/dungeon_items_weapons.yml b/Resources/Prototypes/_NF/Entities/Markers/Spawners/Random/dungeon_items_weapons.yml
index b33fec89a68..0878f7877b7 100644
--- a/Resources/Prototypes/_NF/Entities/Markers/Spawners/Random/dungeon_items_weapons.yml
+++ b/Resources/Prototypes/_NF/Entities/Markers/Spawners/Random/dungeon_items_weapons.yml
@@ -291,6 +291,9 @@
     - WeaponCaseLongRailgunPeregrine # HL. Intended rarity for the Peregrine
     #Hardlight start
     - WeaponCaseLongVortex
+
+    # Triad start
+    - WeaponCaseLongMisriah # this might need to become tier 5
     chance: 1.0
     offset: 0.0
     rarePrototypes:
diff --git a/Resources/Prototypes/__Triad/Catalog/Fills/Items/weapon_cases_expedition.yml b/Resources/Prototypes/__Triad/Catalog/Fills/Items/weapon_cases_expedition.yml
new file mode 100644
index 00000000000..f88d35bfe93
--- /dev/null
+++ b/Resources/Prototypes/__Triad/Catalog/Fills/Items/weapon_cases_expedition.yml
@@ -0,0 +1,14 @@
+- type: entity
+  parent: WeaponCaseLong
+  id: WeaponCaseLongMisriah
+  suffix: Dungeon, Misriah
+#  categories: [ HideSpawnMenu ]
+  components:
+  - type: StorageFill
+    contents:
+    - id: WeaponRifleMMisriahAutorifle
+      amount: 1
+    - id: Magazine762x51mmFMJ
+      amount: 3
+    - id: AmmoBox762x51mmFMJ
+      amount: 2
diff --git a/Resources/Prototypes/__Triad/Entities/Objects/Weapons/Guns/Rifles/rifles.yml b/Resources/Prototypes/__Triad/Entities/Objects/Weapons/Guns/Rifles/rifles.yml
new file mode 100644
index 00000000000..154e19124d6
--- /dev/null
+++ b/Resources/Prototypes/__Triad/Entities/Objects/Weapons/Guns/Rifles/rifles.yml
@@ -0,0 +1,57 @@
+- type: entity
+  name: Misriah Autorifle (762x51mm)
+  parent: [BaseWeaponRifle, BaseGunMeleeBlunt, BaseC3SyndicateContraband] # Frontier: BaseSecurityContraband<BaseC3SyndicateContraband
+  id: WeaponRifleMMisriahAutorifle
+  description: Standard issue assault rifle issued to marines and special forces; chambered in 762x51mm ammo. Produced by SESWC.
+  components:
+  - type: Sprite
+    sprite: __Triad/Objects/Weapons/Guns/Rifles/ma5b.rsi
+    layers:
+      - state: base
+        map: ["enum.GunVisualLayers.Base"]
+      - state: mag-0
+        map: ["enum.GunVisualLayers.Mag"]
+  - type: Clothing
+    sprite: __Triad/Objects/Weapons/Guns/Rifles/ma5b.rsi
+    quickEquip: false
+    slots:
+    - Back
+    - suitStorage
+  - type: Gun
+    fireRate: 6
+    soundGunshot:
+      path: /Audio/Weapons/Guns/Gunshots/lmg.ogg
+  - type: ChamberMagazineAmmoProvider
+    soundRack:
+      path: /Audio/Weapons/Guns/Cock/ltrifle_cock.ogg
+  - type: ItemSlots
+    slots:
+      gun_magazine:
+        name: Magazine
+        startingItem: Magazine762x51mmFMJ
+        insertSound: /Audio/Weapons/Guns/MagIn/ltrifle_magin.ogg
+        ejectSound: /Audio/Weapons/Guns/MagOut/ltrifle_magout.ogg
+        priority: 2
+        whitelist:
+          tags:
+            - Magazine762x51mmFMJ
+            - Magazine762x51mmLowCapacityFMJ
+        whitelistFailPopup: gun-magazine-whitelist-fail
+      gun_chamber:
+        name: Chamber
+        startingItem: Cartridge762x51mmFMJ
+        priority: 1
+        whitelist:
+          tags:
+            - Cartridge762x51mmFMJ
+  - type: ContainerContainer
+    containers:
+      gun_magazine: !type:ContainerSlot
+      gun_chamber: !type:ContainerSlot
+  - type: MagazineVisuals
+    magState: mag
+    steps: 1
+    zeroVisible: true
+  - type: Appearance
+  - type: NFWeaponDetails
+    manufacturer: weapon-details-manufacturer-SESWC-consortium
diff --git a/Resources/Textures/__Triad/Objects/Weapons/Guns/Rifles/ma5b.rsi/base.png b/Resources/Textures/__Triad/Objects/Weapons/Guns/Rifles/ma5b.rsi/base.png
new file mode 100644
index 00000000000..30b0924d4b7
Binary files /dev/null and b/Resources/Textures/__Triad/Objects/Weapons/Guns/Rifles/ma5b.rsi/base.png differ
diff --git a/Resources/Textures/__Triad/Objects/Weapons/Guns/Rifles/ma5b.rsi/bolt-open.png b/Resources/Textures/__Triad/Objects/Weapons/Guns/Rifles/ma5b.rsi/bolt-open.png
new file mode 100644
index 00000000000..c8aca8e8c99
Binary files /dev/null and b/Resources/Textures/__Triad/Objects/Weapons/Guns/Rifles/ma5b.rsi/bolt-open.png differ
diff --git a/Resources/Textures/__Triad/Objects/Weapons/Guns/Rifles/ma5b.rsi/equipped-BACKPACK.png b/Resources/Textures/__Triad/Objects/Weapons/Guns/Rifles/ma5b.rsi/equipped-BACKPACK.png
new file mode 100644
index 00000000000..211e9b59283
Binary files /dev/null and b/Resources/Textures/__Triad/Objects/Weapons/Guns/Rifles/ma5b.rsi/equipped-BACKPACK.png differ
diff --git a/Resources/Textures/__Triad/Objects/Weapons/Guns/Rifles/ma5b.rsi/equipped-SUITSTORAGE.png b/Resources/Textures/__Triad/Objects/Weapons/Guns/Rifles/ma5b.rsi/equipped-SUITSTORAGE.png
new file mode 100644
index 00000000000..211e9b59283
Binary files /dev/null and b/Resources/Textures/__Triad/Objects/Weapons/Guns/Rifles/ma5b.rsi/equipped-SUITSTORAGE.png differ
diff --git a/Resources/Textures/__Triad/Objects/Weapons/Guns/Rifles/ma5b.rsi/icon.png b/Resources/Textures/__Triad/Objects/Weapons/Guns/Rifles/ma5b.rsi/icon.png
new file mode 100644
index 00000000000..7a0a08f3840
Binary files /dev/null and b/Resources/Textures/__Triad/Objects/Weapons/Guns/Rifles/ma5b.rsi/icon.png differ
diff --git a/Resources/Textures/__Triad/Objects/Weapons/Guns/Rifles/ma5b.rsi/inhand-left.png b/Resources/Textures/__Triad/Objects/Weapons/Guns/Rifles/ma5b.rsi/inhand-left.png
new file mode 100644
index 00000000000..6a2e3814cff
Binary files /dev/null and b/Resources/Textures/__Triad/Objects/Weapons/Guns/Rifles/ma5b.rsi/inhand-left.png differ
diff --git a/Resources/Textures/__Triad/Objects/Weapons/Guns/Rifles/ma5b.rsi/inhand-right.png b/Resources/Textures/__Triad/Objects/Weapons/Guns/Rifles/ma5b.rsi/inhand-right.png
new file mode 100644
index 00000000000..cb15f360bf3
Binary files /dev/null and b/Resources/Textures/__Triad/Objects/Weapons/Guns/Rifles/ma5b.rsi/inhand-right.png differ
diff --git a/Resources/Textures/__Triad/Objects/Weapons/Guns/Rifles/ma5b.rsi/mag-0.png b/Resources/Textures/__Triad/Objects/Weapons/Guns/Rifles/ma5b.rsi/mag-0.png
new file mode 100644
index 00000000000..828b6f772a4
Binary files /dev/null and b/Resources/Textures/__Triad/Objects/Weapons/Guns/Rifles/ma5b.rsi/mag-0.png differ
diff --git a/Resources/Textures/__Triad/Objects/Weapons/Guns/Rifles/ma5b.rsi/meta.json b/Resources/Textures/__Triad/Objects/Weapons/Guns/Rifles/ma5b.rsi/meta.json
new file mode 100644
index 00000000000..fc52651e5e0
--- /dev/null
+++ b/Resources/Textures/__Triad/Objects/Weapons/Guns/Rifles/ma5b.rsi/meta.json
@@ -0,0 +1,47 @@
+{
+    "version": 1,
+    "license": "CC-BY-SA-3.0",
+    "copyright": "made by FireRising",
+    "size": {
+        "x": 32,
+        "y": 32
+    },
+    "states": [
+        {
+            "name": "icon"
+        },
+        {
+            "name": "base"
+        },
+        {
+            "name": "bolt-open"
+        },
+        {
+            "name": "mag-0"
+        },
+        {
+            "name": "inhand-left",
+            "directions": 4
+        },
+        {
+            "name": "inhand-right",
+            "directions": 4
+        },
+        {
+            "name": "wielded-inhand-left",
+            "directions": 4
+        },
+        {
+            "name": "wielded-inhand-right",
+            "directions": 4
+        },
+        {
+            "name": "equipped-BACKPACK",
+            "directions": 4
+        },
+        {
+            "name": "equipped-SUITSTORAGE",
+            "directions": 4
+        }
+    ]
+}
diff --git a/Resources/Textures/__Triad/Objects/Weapons/Guns/Rifles/ma5b.rsi/wielded-inhand-left.png b/Resources/Textures/__Triad/Objects/Weapons/Guns/Rifles/ma5b.rsi/wielded-inhand-left.png
new file mode 100644
index 00000000000..61a163af07a
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diff --git a/Resources/Textures/__Triad/Objects/Weapons/Guns/Rifles/ma5b.rsi/wielded-inhand-right.png b/Resources/Textures/__Triad/Objects/Weapons/Guns/Rifles/ma5b.rsi/wielded-inhand-right.png
new file mode 100644
index 00000000000..d62e47b51df
Binary files /dev/null and b/Resources/Textures/__Triad/Objects/Weapons/Guns/Rifles/ma5b.rsi/wielded-inhand-right.png differ