ARC Raiders Medium & Heavy Gun Parts Blueprint Guide: Best Farm Route, Locations, and Refiner Crafting
- KATE
- Share
- ARC Raiders
- 07/30/26
- 9
Gun parts are a hard progression gate in ARC Raiders. You need them for crafting, repairing, and upgrading weapons, but random looting is slow. The better play is simple: farm dense container routes, chase blueprints in high-value zones, then use the Refiner to turn basic parts into the tiers you actually need.

- ARC Raiders Gun Parts Blueprint Overview
- Medium Gun Parts Blueprint Location in ARC Raiders
- Best Places to Find Medium Gun Parts Blueprint
- Heavy Gun Parts Blueprint Location in ARC Raiders
- Best Heavy Gun Parts Blueprint Sources
- Best Gun Parts Farm in ARC Raiders: Stella Montis Route
- Best Stella Montis Route
- Loadout Setup for Blueprint and Gun Parts Farming
- Spawn Timing Rule
- Stella Montis Route Breakdown
- Metro Admin
- Lobby
- Business Center
- Atrium
- Expected Loot Per Good Run
- What to Keep and What to Drop
- How to Craft Medium and Heavy Gun Parts
- Medium Gun Parts Crafting
- Heavy Gun Parts Crafting
- Refiner Upgrade Materials to Watch For
- Best Farming Strategy by Goal
- FAQ
- Where do I find the Medium Gun Parts Blueprint in ARC Raiders?
- Where does the Heavy Gun Parts Blueprint drop?
- What is the best gun parts farm in ARC Raiders?
- How do I craft Medium Gun Parts?
- Should I use a Free Loadout or Naked Loadout?
- Summary

↖ ARC Raiders Gun Parts Blueprint Overview
Blueprints matter more than single drops. A stack of Medium Gun Parts helps once. A Medium Gun Parts Blueprint fixes the problem long-term.
| Item | Use | Best Source |
|---|---|---|
| Medium Gun Parts Blueprint | Unlocks Medium Gun Parts crafting | Stella Montis, Security Checkpoint, weapon cases, high-value loot |
| Heavy Gun Parts Blueprint | Unlocks Heavy Gun Parts crafting | Raider caches, weapon boxes, ammo boxes, red loot zones |
| Simple Gun Parts | Base upgrade and crafting material | Suitcases, trash cans, raider bags, weapon cases |
| Medium Gun Parts | Mid-tier weapon crafting and upgrades | Crafted at Level 2 Refiner after blueprint unlock |
| Heavy Gun Parts | Heavy weapon crafting and repair | High-value containers and blueprint crafting |
Rule of thumb: if it can hold weapons, ammo, raider loot, or rare materials, open it.
↖ Medium Gun Parts Blueprint Location in ARC Raiders
The Medium Gun Parts Blueprint is a legendary blueprint used to craft Medium Gun Parts at a Level 2 Refiner.
You need these parts for mid-tier weapons like:
- Torrene
- Offspray
- Venador
- Tempest
↖ Best Places to Find Medium Gun Parts Blueprint
| Map / Area | Where to Loot | Priority |
|---|---|---|
| Stella Montis | Security Checkpoint lobby, Metro Admin, Lobby | Very High |
| Spaceport Night Raids | Departure / Department Building cabinets, drawers, weapon cases | High |
| Buried City | Raider camp under parking garage | High |
| Water Treatment | Locked room with Dam Surveillance Key | Medium-High |
| General Drops | Air drops, probes, red lockers, weapon crates | Medium |
If you are blueprint hunting, do not full-clear trash areas. Hit weapon cases, raider bags, red lockers, locked rooms, and leave.
That is how you get more rare-roll containers per hour.
↖ Heavy Gun Parts Blueprint Location in ARC Raiders
The Heavy Gun Parts Blueprint is used for heavy-tier weapon parts. It is most useful if your build leans into Heavy Ammo, shotgun-style weapons, or heavy weapon upgrades.
↖ Best Heavy Gun Parts Blueprint Sources
| Source | Containers to Check |
|---|---|
| Raider caches | Raider bags, raider containers, cache boxes |
| Weapon cases | Weapon boxes, locked weapon crates |
| Ammo containers | Ammo boxes, military crates |
| High-value zones | Red-outlined loot areas |
| Map events | Uncovered Caches, air drops, probes |
| Night raids / storms | Any high-tier container with better rare-loot potential |
Do not tunnel on one container. Blueprint drops are RNG. Farm container density + high-value loot pools.
↖ Best Gun Parts Farm in ARC Raiders: Stella Montis Route
The best practical farm is Stella Montis.
A clean run usually gives 30–40 Simple Gun Parts value in about 10–15 minutes. That includes direct Simple Gun Parts, plus Light, Medium, and Heavy Gun Parts converted by crafting value.
↖ Best Stella Montis Route
| Order | Area | Loot Targets | Why It Works |
|---|---|---|---|
| 1 | Metro Admin | Containers, drawers, bags | Highest contest. Hit first. |
| 2 | Lobby | Suitcases, trash cans, raider bags, weapon cases | Best container density. |
| 3 | Business Center | Bags, side rooms, containers | Good materials and leftover loot. |
| 4 | Atrium | Upper-floor suitcases, trash cans, raider bags | Often skipped by players. |
| 5 | Extract | Metro or nearest safe exit | Keeps runs fast. |
Do not overstay. The route is strong because it is repeatable. Extract, reset, run it again.
↖ Loadout Setup for Blueprint and Gun Parts Farming
Pick the loadout based on the goal.
| Loadout | Use It When | Main Benefit | Downside |
|---|---|---|---|
| Free Loadout | Farming raw gun parts | More inventory space | No safe pocket safety |
| Naked Loadout | Hunting blueprints | Can secure blueprint in safe pocket | Less carrying space |
| Budget Kit | Struggling to extract | Better survival | Lower profit margin |
Best advice: use Naked Loadout for blueprint farming. If a Medium Gun Parts Blueprint or Heavy Gun Parts Blueprint drops, put it in the safe pocket immediately.
A lost blueprint is worse than a lost bag of parts.
↖ Spawn Timing Rule
Spawn time matters. Late spawns mean looted rooms.
| Spawn Time | Move |
|---|---|
| 29–30 minutes | Full route. Go Metro Admin first. |
| 27–28 minutes | Continue if close to Metro Admin or Lobby. |
| Under 27 minutes | Reset if blueprint hunting. |
| Late spawn, low risk mood | Loot leftovers in Lobby, Business Center, Atrium. |
If Metro Admin is already opened, still check containers. Many players only grab blueprints, keys, or attachments. They often leave Simple Gun Parts behind.
Their impatience is your profit.
↖ Stella Montis Route Breakdown
↖ Metro Admin
Go here first.
Loot:
- Cabinets
- Drawers
- Raider bags
- Weapon containers
- Already-opened containers
This room is contested, but it pays. Even a looted Metro Admin can still hold gun parts.
↖ Lobby
This is the core of the run.
Prioritize:
- Suitcases
- Trash cans
- Raider bags
- Weapon cases
- Breach rooms
- Upper-floor rooms
Weapon cases are non-negotiable. They can drop Simple, Light, Medium, and Heavy Gun Parts, plus blueprints.
↖ Business Center
Fast sweep. Do not waste time.
Keep:
- Gun parts
- Mod Components
- Steel Springs
- Blueprints
- Valuable crafting materials
Drop common ammo if space gets tight.
↖ Atrium
Check the corners and upper floors. Many players skip them.
Best targets:
- Upper-floor suitcases
- Raider bags
- Trash cans
- Side containers
- Containers near extract path
This is where a lot of free value comes from.
↖ Expected Loot Per Good Run
One strong Stella Montis run can look like this:
| Loot | Example Amount | Simple Gun Parts Value |
|---|---|---|
| Simple Gun Parts | 16 | 16 |
| Heavy Gun Parts | 2 | 8 |
| Medium Gun Parts | 2 | 8 |
| Light Gun Parts | 1 | 4 |
| Blueprints | 1–3 lucky drops | Permanent unlock value |
| Mod Components / Steel Springs | Variable | High crafting value |
That is roughly 36 Simple Gun Parts value before counting blueprint value.
The blueprint drops are not guaranteed. The gun part value is the consistent reason to run this route.
↖ What to Keep and What to Drop
Inventory discipline matters. Bad looting ruins good routes.
| Priority | Keep | Drop First |
|---|---|---|
| S-Tier | Blueprints | Never drop unless forced |
| A-Tier | Medium / Heavy / Light Gun Parts | Keep over most loot |
| A-Tier | Simple Gun Parts | Core crafting material |
| B-Tier | Mod Components, Steel Springs, Explosive Compounds | Keep if space allows |
| C-Tier | Rare ammo | Keep only if useful |
| Low | Common ammo, low-value junk | Drop first |
If you find a blueprint, secure it first. Everything else is secondary.
↖ How to Craft Medium and Heavy Gun Parts
Finding the blueprint is only step one. You still need the Workshop setup.
↖ Medium Gun Parts Crafting
To craft Medium Gun Parts:
1. Find the Medium Gun Parts Blueprint.
2. Learn it from inventory.
3. Upgrade the Refiner to Level 2.
4. Use Simple Gun Parts and required materials to craft Medium Gun Parts.
↖ Heavy Gun Parts Crafting
To craft Heavy Gun Parts:
1. Find the Heavy Gun Parts Blueprint.
2. Learn the recipe.
3. Use the correct Refiner recipe.
4. Stockpile enough base gun parts and materials.
↖ Refiner Upgrade Materials to Watch For
Keep these when you see them:
- Toasters
- Fireball Burners
- ARC Motion Cores
- Mechanical Components
- Steel Springs
- Mod Components
Do not burn rare Workshop materials casually. A Refiner upgrade unlocks more value than one random weapon repair.
↖ Best Farming Strategy by Goal
| Goal | Best Strategy |
|---|---|
| Need Simple Gun Parts fast | Run Stella Montis: Metro Admin → Lobby → Business Center → Atrium |
| Need Medium Gun Parts Blueprint | Farm Stella Montis, Security Checkpoint, weapon cases, red lockers |
| Need Heavy Gun Parts Blueprint | Farm raider caches, weapon boxes, ammo boxes, high-value zones |
| Need Workshop materials | Expand Stella Montis route into side rooms |
| Need safer extracts | Run partial route and leave early |
If you are broke on parts, do 2–3 Stella Montis runs. That is usually enough to stabilize your weapon upgrades.
↖ FAQ
↖ Where do I find the Medium Gun Parts Blueprint in ARC Raiders?
The best places are Stella Montis, especially Security Checkpoint-style high-value areas, plus weapon cases, red lockers, air drops, probes, and locked loot rooms. Spaceport Night Raids and Buried City are also strong options.
↖ Where does the Heavy Gun Parts Blueprint drop?
It can drop from raider caches, weapon boxes, ammo boxes, red high-value zones, map events, air drops, and probes. Night raids and storm conditions are better for rare loot farming.
↖ What is the best gun parts farm in ARC Raiders?
The best repeatable farm is Stella Montis: Metro Admin → Lobby → Business Center → Atrium → Extract. A good run gives around 30–40 Simple Gun Parts value in 10–15 minutes.
↖ How do I craft Medium Gun Parts?
Learn the Medium Gun Parts Blueprint, upgrade your Refiner to Level 2, then craft Medium Gun Parts using Simple Gun Parts and required materials.
↖ Should I use a Free Loadout or Naked Loadout?
Use Free Loadout for maximum part farming. Use Naked Loadout for blueprint farming because the safe pocket can protect rare blueprint drops.
↖ Summary
For fast gun parts in ARC Raiders, farm Stella Montis. Run Metro Admin, Lobby, Business Center, and Atrium, then extract fast. Expect around 30–40 Simple Gun Parts value per clean run.
For long-term progression, chase the Medium Gun Parts Blueprint and Heavy Gun Parts Blueprint in high-value containers. Once learned, upgrade your Refiner and turn basic parts into the weapon components you actually need.
Best rule: protect blueprints, prioritize weapon containers, loot fast, extract early, repeat.
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