Quick Answer: The Fallout 76 Gatling Laser is a heavy energy weapon that scales with both Bullet Storm (Strength) and Science! (Intelligence), unlike the Gatling Gun which has no Energy keyword. Run Bullet Storm 3 + Bringing the Big Guns + Science! + Power User 3 to maximize damage and Fusion Core efficiency. The plan is sold by the Brotherhood Vendor at The Whitespring Resort and the MODUS armory terminal at The Whitespring Bunker (level 25+).
Most heavy gun guides treat the Gatling Laser as an interchangeable swap for the Gatling Gun — same Bullet Storm perks, same loadout, different ammo. That framing misses the weapon's most valuable property: the Gatling Laser carries the Energy keyword, which means Science! (Intelligence, single rank, INT-scaling) applies to every shot. The Gatling Gun has Ballistic + Minigun keywords only, and Science! does nothing for it.
This guide covers every verified stat and perk for the 2026 meta, including the Fusion Core management trick that doubles your effective clip size without firing a single extra shot.
"Give new life to your favorite unique items. Unique weapons and armor can now have their Legendary Mods changed and have a 4th Legendary Mod added!"
— Bethesda, The Slasher update highlights, September 15, 2026 (fallout.bethesda.net)
What Makes the Gatling Laser Different From the Gatling Gun?
The answer is in the weapon keywords. Pull up the Gatling Gun on fallout.wiki and you see: Heavy gun · Automatic · Ballistic · Minigun. Pull up the Gatling Laser: Heavy gun · Automatic · Energy · Gatling Laser.
That single keyword swap — Ballistic → Energy — changes which perks scale it:
| Perk | Gatling Gun | Gatling Laser |
|---|---|---|
| Bullet Storm (STR) | ✅ Yes | ✅ Yes |
| Science! (INT) | ❌ No | ✅ Yes |
| Stabilized in PA (STR) | ✅ Yes | ✅ Yes |
| Bear Arms (STR) | ✅ Yes | ✅ Yes |
Science! in its current single-rank form (post-Patch 1.7.20.12) scales with Intelligence: at INT 10 it adds +15.92% Energy damage (source: fallout.wiki/wiki/Science!_(Fallout_76)). That is a meaningful damage bonus that costs zero Strength points — if you were already running INT for Gunsmith or Ammo Factory, Science! is free damage.
Gatling Laser Base Stats (Level 45, Season 26 / Update 28)
Stats verified from fallout.wiki wikitext API, pageid 597688.
| Stat | Value |
|---|---|
| Damage (Energy) | 25 |
| Fire Rate | 182 |
| Range | 198 |
| Accuracy | 56 |
| Weight | 18.0 lbs |
| AP Cost | 8 |
| Clip Size | 500 (1 Fusion Core) |
| Spin-Up | 1.00 second |
| Sound | Very Loud |
The 500-shot clip is deceptive. At fire rate 182, the gun empties a Fusion Core in roughly 165 seconds of continuous fire. Power User rank 3 doubles the Fusion Core duration — not triples, a common misread of the perk. With Power User 3, each core lasts around 330 seconds of fire. That is the single biggest quality-of-life upgrade for this build.
Why Are Fusion Core Rules Different From Other Ammo?
The Gatling Laser has an unusual reload mechanic. The reload animation looks like the gun ejects the spent core and inserts a new one — but this does not actually happen. You can reload the Gatling Laser freely without losing any ammo. All Fusion Cores always stay in your inventory. When you reload, the gun refills its 500-shot counter from the core in your inventory with the highest charge percentage.
This means you should reload the Gatling Laser often, especially when the counter drops to around 300 shots, to always start fights at maximum capacity. You never waste ammo by reloading early.
Best Perks for the Gatling Laser Build
Strength (Core Damage Path)
Bullet Storm (Strength, rank 3): The primary damage multiplier for all heavy guns. Builds 1 stack per 30 ammo spent, up to 10 stacks maximum at +9% each — that is +90% at full stacks. The Gatling Laser's fire rate of 182 means stacks build fast in sustained fire.
Bringing the Big Guns (Strength, rank 1): Extends the Bullet Storm stack cap from 10 to 20, pushing the maximum bonus to +180%. A single-rank perk that roughly doubles the ceiling of your primary damage multiplier. Required for endgame builds.
Lock and Load (Strength, rank 1): When you reload, you retain half your current Bullet Storm stacks instead of losing them all. At 20 stacks (with Bringing the Big Guns), you reload into 10 stacks. This makes sustained DPS far more consistent.
Stabilized (Strength): While in Power Armor, heavy guns gain VATS accuracy and ignore a percentage of enemy armor. The Gatling Laser's high fire rate makes VATS impractical for primary combat, but Stabilized's passive armor-ignore effect is valuable in a PA build even if you are hip-firing.
Bear Arms (Strength, rank 3): Reduces the weight of heavy guns. The Gatling Laser weighs 18.0 lbs base — Bear Arms brings this down significantly, freeing carry weight for Fusion Cores and gear.
Intelligence (Science! Path)
Science! (Intelligence, rank 1): Because the Gatling Laser has the Energy keyword, Science! applies to its damage. At INT 10 the bonus is +15.92%. At INT 15 the bonus is higher still. This is the differentiating perk of this build versus a Gatling Gun build — if your INT is already elevated for Gunsmith or Ammo Factory, adding Science! costs nothing extra.
Gunsmith (Intelligence, rank 5): Slows weapon degradation and unlocks high-level mods. Required at rank 5 for most endgame Gatling Laser mods.
Ammo Factory (Intelligence, rank 4): Craft significantly more Fusion Cores per batch when combined with Power User — important for self-sufficiency.
Endurance (Fusion Core Management)
Power User (Endurance, rank 3): Doubles Fusion Core duration — the 500-shot clip behaves like a 1,000-shot clip. Power User rank 3 doubles, it does NOT triple, duration. This is not optional; the Gatling Laser's primary weakness is ammo consumption, and Power User directly solves it. For routes to stockpile Fusion Cores, see the Fallout 76 Fusion Core Farming Guide.
Luck (Damage Multipliers)
Bloody Mess (Luck, rank 3): A global +15% damage multiplier that stacks multiplicatively with Bullet Storm and Science!. Standard inclusion on any damage build.
Four Leaf Clover (Luck, rank 1): Fills the critical hit meter on VATS misses — not hits (the mechanic changed in Patch 1.7.16.13). At high Luck, this generates crits consistently when landing hits in hip-fire while the meter fills passively via misses. Combined with Critical Savvy (Luck, rank 3, reduces crit bar consumption so you crit more often) and Better Criticals (Luck, rank 3, +60% crit damage), this adds an alternate damage spike to any sustained hip-fire rotation.
Best Mods for the Gatling Laser
Gamma Wave Emitter (Receiver): Adds burning damage to each shot. Good for builds that want to apply damage-over-time in addition to the primary Energy hit.
Prime Receiver: Superior base damage, plus a significant bonus against Scorchbeasts and Scorched. Requires the Plan: Prime Receiver for Gatling Laser, which Scorchbeasts can drop. This is the standard endgame damage receiver.
Calibrated Receiver: Superior critical shot damage. Pairs well with a Four Leaf Clover crit loop.
Charging Barrels: Increases range to approximately 222 from the base 198 but dramatically reduces attack rate. The reduced rate is a steep cost — you lose significant Bullet Storm stack accumulation speed. Only viable in builds that need extreme long-range accuracy and are not relying on stack sustain.
For most builds: Prime Receiver + standard barrel (or Stabilized long barrel if running VATS for crits).
How to Get the Gatling Laser Plan
The Plan: Gatling laser is always available from three vendors if your character is level 25 or above (source: fallout.wiki, Plan page, pageid 480739):
- Brotherhood Vendor at The Whitespring Resort
- MODUS armory terminal at The Whitespring Bunker (accessible at level 1+)
- Vendor Bot Phoenix at Watoga Shopping Center
If you prefer to find it as loot, the plan drops from Savage Divide:
- Container loot in the Savage Divide
- Boss creature kills (Deathclaw, Scorchbeast, Sheepsquatch, Grafton Monster, Mothman, and others)
- Treasure Maps in the Savage Divide
- Daily Ops completions while character is level 25–49 (low chance)
The vendor route is the fastest. Brotherhood Vendor and Vendor Bot Phoenix reset stock every 24 real-world hours — check both if one is sold out.
Fusion Core Farming for the Gatling Laser
Power User rank 3 doubles your per-core shot count, but you still need a steady supply. Three efficient sources:
Fusion Core Processor (Workshops): Workshop generators produce a Fusion Core in approximately 7 minutes when powered by 100 units, capped at 3 stored at once. Claim Poseidon Energy Plant WV-06 or Monongah Power Plant for access to multiple Processors per server.
Fusion Core Extractor (Fusion Core Deposits): Several deposits in the game world allow a Fusion Core Extractor workshop building to harvest cores. These are rare but produce continuously.
Crafting with Ammo Factory: Combined with Ammo Factory rank 4 (+150% ammo craft output) and your doubled core consumption from Power User, crafting becomes the most efficient late-game supply chain. Collect nuclear material and crystals to sustain production.
Two Archetypes: Standard Heavy vs Power Armor
Standard Heavy (No PA): INT 10 + STR 15. Run full Bullet Storm stacks with Science! and Bear Arms. Equip Unyielding armor for +3 SPECIAL per piece at low HP for maximum Science! INT bonus. The Unyielding bonus scales Science! further since it raises effective INT. Bloodied Gatling Laser with Furious 4-star is the ceiling for this path. For legendary effects rankings, see the Fallout 76 Best Legendary Effects Guide.
Power Armor Gatling Laser: Add Stabilized for passive armor-pen. T-65 Power Armor (6,900 Gold Bullion from Reginald Stone at Vault 79) is the standard endgame frame for DR. Emergency Protocols mod on T-65 torso activates below 20% HP: +25% movement speed and −50% incoming damage. For a Bloodied PA crossover, Emergency Protocols is a passive safety net. Hellcat (5 piece for +12% ballistic damage reduction) is a viable alternative. Full PA chassis comparison is in the Fallout 76 Power Armor Build Guide.
For a comparison of the Gatling Laser against the Gauss Minigun (another Energy heavy gun that also dual-scales Science!) and the plasma-based options, see the Fallout 76 Best Energy Weapons Guide.
FAQ
Does Science! actually apply to the Gatling Laser? Yes. The Gatling Laser carries the Energy keyword in its game data, and Science! scales Energy-type damage. At INT 10, the current single-rank Science! perk (post-Patch 1.7.20.12) adds +15.92% Energy damage. The Gatling Gun does NOT have this keyword and cannot use Science!.
What is the best legendary effect for the Gatling Laser? Anti-Armor (50% armor ignore, multiplicative with Stabilized) is the standard 1-star pick for most builds. Bloodied (up to +95% near 1 HP) is the highest raw damage ceiling. Two Shot loses value because the second projectile from a beam weapon fires off-axis at range, reducing accuracy.
Can I use the Gatling Laser with Covert Operative? Covert Operative is listed in the wiki's perk sneak field for the Gatling Laser, but the weapon is Very Loud and heavy — using it while sneaking will break stealth almost immediately. Sneak builds prefer The Fixer or suppressed rifles.
How do I reload the Gatling Laser without wasting ammo? The Gatling Laser's reload animation does not actually eject the Fusion Core — your inventory keeps all cores regardless of when you reload. Reload freely any time you want to refill the 500-shot counter. The counter draws from whichever core in your inventory has the highest charge.
Is the Gamma Wave Emitter worth using? The Gamma Wave Emitter adds burning damage on each hit, which is useful for DoT stacking against tough targets. It does not interfere with Bullet Storm stacking. If you have a spare mod slot and are facing enemies with high Energy resist, it provides value. Otherwise, Prime Receiver is higher overall damage.
Where do Ultracite Fusion Cores come from? Ultracite Fusion Cores drop from Scorchbeasts and the Scorchbeast Queen. They start at higher charge than standard cores, which makes them more efficient per core with Power User. You can also craft them with a Prime Receiver mod equipped (kills enemies of the Prime Receiver's damage type drop the corresponding ultracite ammo).
Looking to unlock the Gold Bullion gear and T-65 Power Armor faster?
Article applies to Season 26 / Update 28 (The Slasher, released September 15, 2026). Stats from fallout.wiki (pageid 597688, verified 2026-10-14).
