Viper

German submachine gun chambered in light ammunition. Compatible only with Lance Magazines. Equipped with an integrated flashlight.

GUID

Item Gun Rare

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4×2 (8)

Inventory size

Primary

Hand slot

Semi, Auto, Safety

Firemodes

125 m

Range

600 RPM

Fire rate

0.4%

Durability loss per shot

Sight, Barrel

Attachment hooks

Damage

Combat damage

	Skull	Spine	Leg	Arm
Player	27.5	20	15	15
Zombie	82.5	45	22.5	22.5
Animal	27.5	20	15	—

Other damage

Standard caliber

Barricade	15
Structure	15
Vehicle	25
Resource	15
Object	15

Range & ballistics

Full damage at every distance up to 125 m. No falloff curve.

Max range

125 m

Alert radius

48 m

Bullet drop

×4

Recoil

Control: Hard
Simulation: Auto, 12 rounds · 10 rps
Side bias: Random side-to-side
Up kick / shot: 3.25°
Side kick / shot: ±1.25°
Recovery: 25% ↑ / 25% ↔

Lance Magazine Default

25 rounds · ×1 dmg

Extended Lance Magazine

17× zoom Spread -40%ADS speed +15%

Military Nightvision Scope

6× zoom Military NV Spread -20%

Cross Scope

2× zoom Spread -5%

Constrictor Iron Sights

1× zoom

Cyclo 7x Scope

7× zoom Spread -30%ADS speed +10%

Dot Sight

2× zoom Spread -3%

Sentin 5x Scope

5× zoom Spread -30%ADS speed +5%

24× zoom Spread -40%ADS speed +25%

Guarani Barrel

Silenced Sound range -50%

BB Barrel

Silenced Sound volume -70%Sound range -50%

Viper Barrel

Silenced Sound volume -50%Sound range -50%

Light Suppressor

Silenced Muzzle brake Bullet drop +25%Sound volume -70%Sound range -50%

2 blueprints

Repair

Repair lvl.2

4 x

100%

Tool

3 x

Spawn tables (7)

Useful for modders. Each row links to the spawn table's page.

Spawn ID	Spawn Name	Drop Chance	Pool Size
32153	Brazil Carepackage LowMil	14.88 %	26
32349	Rio Military Mid Weapons	14.29 %	6
32135	Rio Military High Weapons	10.91 %	7
32371	Rio Zombie Military Mid	3.95 %	47
32348	Brazil Military Mid Rio	2.50 %	58
32370	Rio Zombie Military High	2.18 %	72
32134	Brazil Military High Rio	1.71 %	72

How loot works in Unturned Sections that apply to this gun are open by default

Map spawn points

Each dot is a fixed loot point. The map is split into a grid of regions; each region tops up its loot on a server-set timer (Items.Respawn_Time) up to a fraction of its points (Items.Spawn_Chance, usually 10–50%). When a point fills, the table rolls a rarity tier (Common / Rare / Epic / Legendary) by cumulative chance, then picks one item uniformly from that tier. The Drop Chance column is the combined odds — 100% means the item is the sole candidate, not that the point will always be filled.

Zombie kill drops

Zombies on certain map regions can drop items when killed. Drop chance is the per-roll weight from that zombie's loot table. Boss / Mega / Flanker variants run higher-tier tables.

Resource harvesting

Trees, rocks, metal nodes, and forageable bushes drop items when harvested with a tool. Trees yield Log + Stick per hit; rocks / nodes / forage roll a spawn table once per harvest. Forage bushes are single-use until the server resets them.

Object destruction & droppers

Some world objects drop items when destroyed (rubble loot — fixed roll count from a spawn table) or when interacted with. Dropper objects (printers, cash registers, etc.) dispense one item per use with a cooldown; some require power.

NPC vendors

Shopkeepers offer fixed lists of items they sell to you and items they buy from you. Costs use either skill experience (default) or an in-game currency item. Some offers gate behind quest progress, skillsets, or reputation.

Cases (Unbox / Open)

Supply / barricade items with an Unbox-style action that triggers a blueprint. The blueprint's Item_Random reward rolls a configured number of items from a spawn table — your case shows its action name and roll count on its own page.

Horde beacons

Place a beacon and a wave of zombies attacks. Defeating the wave drops loot at the beacon location, with rewards scaling roughly by √players in the area when participant scaling is on.

Fishing rods

Cast a rod into water and reel in. Each successful catch rolls one random item from the rod's catch pool and grants skill XP. Higher-tier rods can have different pools and faster bite times.

Consumable rewards

Event consumables (Birthday Cake, Lottery Scratchers, Easter Egg, etc.) roll between min and max items from a spawn table when used, on top of any normal food / water / health effects.

Hunted animals

Killing an animal either rolls items from its Reward_ID spawn pool (Reward_Min-Reward_Max rolls) or, when no reward pool is set, drops a fixed 2-4 of Meat and 2-4 of Pelt. Hunting skill influences XP, not loot.

Vehicle wrecks

When a vehicle is destroyed (explosion, decay, water), its Drops_Table_ID spawn pool rolls Drops_Min-Drops_Max items at the wreck location. Most vehicles default to vanilla table 962 with 3-7 rolls; mods can override.

Airdrops

Random in-game events that drop a crate of high-tier loot at a marked airdrop location. Crates spawn on server-side timers and are independent of regular item spawn points.

How vendor trading works in Unturned

NPCs on a map can run one or more vendors. Each vendor offers a fixed list of items they sell to you and items they buy from you. Each card below covers one (NPC, vendor) pair and lists every offer involving this item.

Price units: when no currency is configured the vendor uses your skill experience; otherwise an in-game currency item (its name appears next to the cost). Either way, the number reflects what changes hands per transaction.

Conditions (orange) gate the offer — quest progress, a skillset, reputation, etc. Rewards (green) are extras granted on top of the trade itself: bonus reputation, a quest flag flip, XP, etc. Hover any badge for the resolved name and exact rule.

Pre-equipped on a gun means the vendor sells it with specific attachments already mounted (a particular scope, magazine, ammo type, etc.).

Zangão's Weaponry

Run by Rio Merchant Zangão

You give

1,000 Exp

You get

Viper ×1

Date_Counter condition Date_Counter condition

You give

Viper ×1

You get

3 Exp

Zangão's Weaponry

Run by Rio Merchant Zangão

You give

100 Exp

You get

Viper ×1

Date_Counter condition Date_Counter condition

You give

Viper ×1

You get

30 Exp

Jeff's Unsorted Crates

Run by Rio Coalition Jeff

Locked behind progression in quest Out With a Bang!. Show exact unlock rules (1 path)

Conditions inside this path must all be true together for the NPC to offer the shop.

Quest: Out With a Bang! — milestone 3 of 5 at stage 2+

You give

60 Exp

You get

Viper ×1

Rio_Viper_0.dat

Learn more

GUID 03cfefae171747b694c984029511899b
Type Gun
Rarity Rare
Useable Gun
Slot Primary
ID 34001

Can_Use_Underwater true

Instantiated_Item_Name_Override Rio_Viper
InspectAudioDef Items/Weapons/Guns/SMG/Rio_Viper_0/Inspect.ogg
EquipAudioClip Items/Weapons/Guns/SMG/Rio_Constrictor_0/Equip.ogg

Shared_Skin_Lookup_ID 1027
Shared_Skin_Apply_Visuals False

Size_X 4
Size_Y 2

Sight 34002
Magazine 33991
Tactical 35155

Hook_Sight
Hook_Barrel

Ammo_Min 10
Ammo_Max 25

Safety
Semi
Auto

Requires_NonZero_Attachment_Caliber true

Attachment_Calibers 7
// iron sight
Attachment_Caliber_0 36246
// bayo, lights
Attachment_Caliber_1 36226
// scopes
Attachment_Caliber_2 36230
// sights
Attachment_Caliber_3 36231
// barrel
Attachment_Caliber_4 33870
// bipod, vert grip
Attachment_Caliber_5 36227
// hori grip
Attachment_Caliber_6 36228

Magazine_Calibers 1
Magazine_Caliber_0 36214

Range 125
Firerate 4
Action Trigger
Unplace 0
Replace 0

Player_Damage 25
Player_Leg_Multiplier 0.6
Player_Arm_Multiplier 0.6
Player_Spine_Multiplier 0.8
Player_Skull_Multiplier 1.1

Zombie_Damage 75
Zombie_Leg_Multiplier 0.3
Zombie_Arm_Multiplier 0.3
Zombie_Spine_Multiplier 0.6
Zombie_Skull_Multiplier 1.1

Animal_Damage 25
Animal_Leg_Multiplier 0.6
Animal_Spine_Multiplier 0.8
Animal_Skull_Multiplier 1.1

Barricade_Damage 15
Structure_Damage 15
Vehicle_Damage 25
Resource_Damage 15
Object_Damage 15

Durability 0.4

Aim_In_Duration 0.175
Spread_Angle_Degrees 8.531
Spread_Aim 0.1

Recoil_Min_X -1.25
Recoil_Min_Y 3
Recoil_Max_X 1.25
Recoil_Max_Y 3.5

Recover_X 0.25
Recover_Y 0.25

Shake_Min_X -0.001
Shake_Min_Y 0.001
Shake_Min_Z -0.005
Shake_Max_X 0.001
Shake_Max_Y -0.001
Shake_Max_Z -0.005

Muzzle 36169
Shell 36180

Blueprints
[
	{
		Name Repair
		CategoryTag "732ee6ffeb18418985cf4f9fde33dd11" // Repair
		Operation RepairTargetItem
		InputItems
		[
			{
				ID "0dbfa634dd0d4f78a45f0999b37edef7" // Metal Scraps
				Amount 4
			}
			{
				ID "8eb400d5952e4c14bde472dfeccef93d" // Blowtorch
				Delete false
			}
		]
		Skill Repair
		Skill_Level 2
		Effect "84347b13028340b8976033c08675d458" // Wrench
	}
	{
		CategoryTag "ad1804b6945145f3b308738b0b8ea447" // Tools
		InputItems
		[
			{
				ID this
			}
			{
				ID "1a7d3ccce9e1499e877bab13638bdfcc" // Hammer
				Delete false
			}
		]
		OutputItems "0dbfa634dd0d4f78a45f0999b37edef7 x 3" // Metal Scraps
		Effect "84347b13028340b8976033c08675d458" // Wrench
	}
]