The Extended Light Mag 3 is one of the most sought-after weapon attachment blueprints in ARC Raiders. For players who rely on assault rifles, SMGs, and other light-ammo weapons, this attachment can make a noticeable difference during longer firefights by increasing magazine capacity and reducing the number of reloads needed in combat.

However, many players waste hours searching for a specific spawn point that simply doesn't exist. The reality is that the Extended Light Mag 3 Blueprint is part of ARC Raiders' randomized blueprint loot system, meaning it can appear in various containers rather than a single guaranteed location.

Does the Extended Light Mag 3 Blueprint Have a Fixed Spawn?

No. Based on player reports and current loot mechanics, the Extended Light Mag 3 Blueprint does not have a fixed, 100% guaranteed spawn location.

Instead, it is pulled from blueprint loot pools associated with residential, office, and high-value container spawns. This means your success depends more on efficient farming routes than on visiting one exact location.

For example, a player who loots 40–50 residential containers during a raid generally has a much better chance of finding rare blueprints than someone who spends the entire raid fighting over a single hotspot.

Best Locations to Farm the Blueprint

Buried City

Buried City remains one of the strongest maps for blueprint farming because of its high concentration of searchable containers.

Priority locations include:

Plaza Rosa Pharmacy

Hospital offices

Apartment buildings

Southwest breach room

Administrative desk areas

Many of these locations contain multiple drawers, filing cabinets, and lockers within a small area, allowing players to check dozens of containers in just a few minutes.

A typical Buried City loot run can involve searching 25 to 35 containers before extraction if the route is optimized.

The Dam

The Dam offers another excellent blueprint farming route.

Focus on:

Pale Apartments

Testing Annex

Residential complexes

Administrative rooms

The apartment buildings are especially valuable because a single structure may contain multiple dressers, cabinets, and lockers. Running three apartment blocks in one raid can easily provide access to more than 30 searchable containers.

Blue Gate

Blue Gate is often overlooked by newer players, which can actually make it a safer farming location.

Target:

Village houses

Residential drawers

Locked storage rooms

Office desks

While the overall container density is slightly lower than Buried City, reduced player traffic often means a higher survival rate, which ultimately increases blueprint acquisition over time.

Spaceport

Spaceport is considered one of the highest-risk, highest-reward farming locations.

Key areas include:

Warehouse keycard rooms

Administrative offices

Security stations

Storage facilities

The number of valuable containers is significant, but competition from other Raiders can be intense. If you survive consistently, Spaceport can produce some of the best blueprint farming results in the game.

Weather Conditions Matter

Many experienced players report better results during extreme map conditions.

The most desirable conditions include:

Night Raids

Cold Snap

Hurricane

Hidden Bunker Events

These conditions increase access to higher-tier loot pools and valuable containers.

For example, a Hidden Bunker event can add several premium loot opportunities during a single raid. Even if the Extended Light Mag 3 Blueprint is not guaranteed, opening more high-quality containers dramatically improves your odds.

Efficient Farming Strategy

Instead of hunting for one blueprint, focus on maximizing container volume.

A practical strategy looks like this:

Enter a map during Night or severe weather conditions.

Ignore low-value loot early.

Prioritize drawers, desks, lockers, and filing cabinets.

Search 30–50 containers per raid.

Extract safely rather than chasing PvP fights.

Over ten successful raids, a player may check several hundred blueprint-capable containers. Statistically, this approach produces far better results than repeatedly rushing a single location.

Is the Extended Light Mag 3 Worth Farming?

Absolutely.

The Extended Light Mag 3 is particularly valuable on weapons that suffer from frequent reloads during engagements. Increasing magazine size can mean the difference between winning and losing a fight when facing multiple enemies or aggressive ARC machines.

For example, if a weapon normally carries 30 rounds and the attachment increases capacity by roughly 20–30%, players may gain enough extra ammunition to eliminate an additional target before reloading. In close-range encounters, that advantage can be decisive.

Many dedicated players also combine blueprint farming with progression services and community resources. Discussions about efficient farming routes frequently mention platforms such as U4N, buy arc raiders boosting and blueprints when comparing different ways to accelerate account progression and unlock high-tier equipment.

The biggest mistake players make when searching for the Extended Light Mag 3 Blueprint is assuming there is a secret guaranteed spawn. In reality, success comes from understanding ARC Raiders' randomized loot system and repeatedly farming container-dense locations.

Buried City, The Dam, Blue Gate, and Spaceport currently provide the best opportunities. Combine those maps with Night Raids, Cold Snap conditions, or Hidden Bunker events, and you'll give yourself the highest possible chance of finding the Extended Light Mag 3 Blueprint while also collecting other valuable upgrades along the way.