In ARC Raiders, investing your hard-earned boss reactors into a Legendary energy weapon is one of the biggest endgame decisions you will make. The grind to unlock high-tier gear is brutal, and picking the wrong gun means wasting rare materials on something that doesn't fit your playstyle. Two of the most talked-about options at Gunsmith Level 3 are the Jupiter and the Aphelion.  
While both rely on energy clips, they serve completely opposite roles in combat. The Jupiter is a high-damage, armor-piercing sniper rifle built for chunking massive boss health bars from a safe distance. The Aphelion, following its massive balance updates, has transformed into a highly precise, two-round burst battle rifle that dominates mid-range PvP and keeps aggressive ARC units at bay.  
Core Comparison Table
The Jupiter: The Heavy Precision Piercer
The Jupiter operates as the ultimate long-range tool for safe, heavy-impact engagements. If you prefer to sit back and pick off high-value targets without getting your hands dirty in close-quarters chaos, this is your weapon.  
Bypassing the Armor Mechanics
Against massive ARC threats like the Queen, standard weapons require you to systematically strip away heavy outer plating before you can deal real damage to the glowing internal vulnerabilities. The Jupiter completely ignores this rule. Thanks to its "Very Strong" ARC Armor Penetration rating, its projectiles punch straight through heavy panels, dealing a massive 60 base damage directly to the core on hit. Combined with a 2.0x headshot/weakpoint multiplier, a single well-placed shot can instantly chunk 120 damage off an elite unit.  
The Catch: Terrible Durability
The biggest flaw with the Jupiter is its structural lifespan. It features a flat durability score of 100, but its per-shot degradation is incredibly punishing. Community testing reveals that the Jupiter can barely survive firing through 4 full stacks of ammunition—roughly 125 total shots—before completely breaking down. Because it breaks so fast and takes a painfully slow bolt-action rechamber time between shots, you absolutely cannot use it as your sole primary weapon during a long extraction run.  
Crafting Costs
To put this weapon together at a Gunsmith 3 workshop, you will need to actively hunt the Queen. Breaking her legs is the only guaranteed way to secure the core drop. The recipe requires:  

• 1x Queen Reactor  
• 3x Magnetic Accelerator  
• 3x Complex Gun Parts  

The Aphelion: The Mid-Range PvP Dominator
If the Jupiter is a patient sniper, the Aphelion is an aggressive, frontline dueling rifle. It fires in tight, predictable two-round bursts and uses 10-round magazines, meaning you get 5 bursts before needing to slide into cover.
From "Trash" to God-Tier Meta
When the Aphelion first launched, many players wrote it off because its damage felt weak compared to budget options like the Anvil or Renegade, and its long reload times left players exposed. However, recent balance updates completely flipped the script. The developers cut down its reload speed, flattened its vertical recoil, and significantly increased its base damage. Now, it hits for roughly 20 more damage per shot than a standard Renegade.  
Because it fires energy rounds, it absolutely shreds player shields in PvP encounters. In mid-to-long-range firefights, an Aphelion user can strip an enemy raider's shields in a single burst and finish them with the second, making it arguably the strongest PvP primary rifle in the current meta.  
Tactical Utility and Flying Targets
Beyond PvP, the Aphelion excels at handling frustrating aerial threats like Bombardiers and Rocketeers. The burst delivery provides an immense kinetic impact that interrupts enemy animations. Landing a clean burst on a hovering ARC unit will visibly stagger them, throwing off their aim or slamming them out of the sky.
If you are struggling to gather the necessary blueprints to construct these top-tier weapons yourself, or if you keep losing your hard-earned kits to extraction camp-rats, utilizing an established third-party platform like U4N can help save hours of frustrating deployment loops. Finding a safe arc raiders RMT store blueprints seller allows you to bypass the unforgiving drop rates of the Matriarch and Queen, letting you get straight to using these weapons in live lobbies.
Crafting Costs
Constructing the Aphelion requires you to farm the Matriarch. The strategy here is simpler: you don't actually have to kill the boss; you just need to bring smoke grenades, strip a leg plate, grab the dropped materials, and extract. The recipe requires:  

• 1x Matriarch Reactor  
• 3x Magnetic Accelerator  
• 3x Complex Gun Parts  

Final Verdict: Which One Should You Choose?
Because both weapons consume identical rare materials like Complex Gun Parts and Magnetic Accelerators, you should base your first craft on your immediate gameplay bottlenecks:

• Choose the Jupiter if your primary goal is safe PvE farming, completing high-tier Weekly Trials, or chunking heavy ground bosses from across the map. It is a specialized pocket nuke that you pull out exclusively to melt high-health targets before putting it away to preserve its fragile durability.
• Choose the Aphelion if you want a reliable, high-performance primary rifle for everyday raids. If you frequently find yourself getting pushed by other squads in high-stakes PvP zones, or if you hate dealing with flying ARC units, the Aphelion’s updated damage profile and superior shield-breaking capabilities make it the definitive choice.