Quote from AvAWaRd562 AvAWaRd562 on June 9, 2026, 7:24 am

Hunting for the Heavy Gun Parts blueprint in ARC Raiders can feel like chasing a ghost. Because the game relies heavily on Random Number Generation (RNG), there isn’t a single, magical coordinate where this item is guaranteed to sit on a shelf waiting for you.

Instead of searching blindly, you have to play the odds. By targeting specific container types, maximizing environmental drop modifiers, and hitting high-density map zones, you can tilt the numbers heavily in your favor.

🧰 Container Priority: What to Search (And What to Skip)

Not all loot boxes are created equal. Blueprints are hard-coded to favor specific structural assets. If you waste time opening every kitchen cabinet and basic locker, your farming efficiency plummets.

Data from community testing indicates that weapon-related blueprints have distinct multiplier tiers based on the container type:

• Weapon Cases & Ammo Crates: These are your gold standard. They carry roughly a 3x higher blueprint drop rate compared to standard open-world containers.

• Raider Caches & Black Raider Boxes: These offer a highly consistent blueprint roll. Listen closely while exploring; raider caches often have faint audio cues (like distinct mechanical humming or radio static) when you are nearby.

• Breachable/Locked Rooms: Any container sitting behind a door you have to breach or power up using a battery cell rolls on an elevated loot table.

🗺️ Top Map Hotspots for Farming

While Stella Montis is universally loved for general blueprint hunting due to its sheer quantity of lockers, specific tactical points on other maps yield massive rewards for weapon tech components.

1. Dam Battlegrounds (The Triple-Residence Run)

The apartments flanking Victory Ridge are highly lucrative if you hit them fast. Focus on the Pattern House, Ruby Residence, and Pale Apartments.

• The Strat: Spawn in and burn 1 or 2 adrenaline shots to cross between Ruby and Pale rapidly. In Ruby Residence, ignore the ground floor. Rush straight to the 2nd and 3rd floors where the weapon cases reside, then vault out the windows to save time.

2. Blue Gate (Reinforced Reception)

Head directly for the Reinforced Reception Puzzle Room. Because this area is gated behind a color-terminal puzzle, the game flags the interior stashes as high-tier loot zones. The Warehouse Complex nearby also features a vertical vent stack accessible by zipline that holds hidden military crates.

🌩️ Capitalizing on Drop Rate Modifiers

If you want to maximize your efficiency, you shouldn’t just care about where you loot, but when. ARC Raiders rewards players who brave the harshest conditions with serious math advantages.

Event Type	Drop Rate Modifier	Threat Level
Standard Day Raid	Baseline (1.0x)	Normal
Night Raid	+50% to +100% Rarity Boost	High (Low Visibility)
EM Storm (Electromagnetic)	Up to 150% Drop Multiplier	Extreme (HUD Disruption)

Going into Dam Battlegrounds during an active EM Storm or a night cycle significantly boosts the item tier generation. A weapon case that normally drops a common green attachment blueprint during the day suddenly has a much higher mathematical probability of rolling a rare blueprint like Heavy Gun Parts.

💡 The Safe Pocket Rule & Alternatives

Remember, finding the blueprint is only half the battle; you still have to get out alive. Heavy Gun Parts are a Rare Topside Material weighing 0.5 kg with a stack size of 5. The moment you see that blueprint pop up, immediately drag it into your Safe Pocket. Even if a squad wipes you right at the extraction point, anything in your Safe Pocket stays with you permanently back at the lobby.

If the RNG gods are completely breaking your spirit after dozens of hours, keep an eye on your trader quests and Trial completions. Traders like Tian Wen (Safe Harbor) occasionally yield guaranteed crafting material unlocks like the basic Heavy Gun Parts through quest progression.

Additionally, if you want to skip the extraction grind entirely to focus on building high-tier weapons like the Vulcano or Hullcracker, many players look for verified trade groups or third-party marketplaces online. For instance, platforms like U4N offer options to secure rare items directly via safe in-raid drop-and-surrender methods if you choose to buy arc raiders blueprints ps5 instead of gambling against the game’s drop percentages.