Amplifying the Jupiter Legendary sniper rifle is a permanent, resource-heavy commitment, and unlocking the wrong node first wastes rare Mk. V modules on stats that do not improve its one-shot kill potential. Research Scoped first to capitalize on the rifle's zero-drop armor penetration, follow with Straight Bolt (Ergonomic Bolt) for uninterrupted sight pictures, and leave Bigger Mag for last—stopping altogether if you lack the Amplified Fragments and Magnetic Accelerators required to maintain it.

Unlike mutually exclusive skill trees, all three Jupiter amplification nodes stack on the same rifle. Because every upgrade permanently alters the weapon and raises its upkeep stakes, your priority is strictly about sequencing and economy.

Which Jupiter Upgrade Should You Buy First?

Unlock Scoped first, Straight Bolt second, and Bigger Mag last. The Jupiter deals 60 base damage with near-instant projectile velocity, zero bullet drop, and innate ARC armor penetration. Because a single well-placed shot pierces straight through to a Bastion's core or eliminates smaller ARC units outright, enhancing first-shot precision at extreme range delivers far more value than raw magazine volume.

Prerequisites Before You Farm

Before hunting down node-specific components in Pendola Pass, you must clear the base amplification gate at the Outpost:

1. Craft or Acquire the Base Jupiter: Requires Gunsmith Level 3, the learned Jupiter Blueprint, 3x Magnetic Accelerator, 3x Complex Gun Parts, and 1x Queen Reactor.

2. Upgrade Outpost Benches: Raise both your Gunsmith and Research Station to Level 4.

3. Apply the Tier Unlocker: Spend one Amplification Module Mk. V (matched to Legendary rarity) to push the Jupiter into the fifth Amplified tier and expose its three research nodes.

Use this priority matrix to allocate your early materials based on your combat role:

Real-World Performance: How Each Node Changes the Rifle

Upgrading the Jupiter fixes its sluggish 39.2 Agility handling, but none of the nodes alter its 60 base damage, 2.0x headshot multiplier, or 7.67 fire-rate ceiling. Here is how each upgrade performs under live raid conditions.

1. Scoped: Fixing the Sight Picture Bottleneck

Following Patch 1.17.0, the stock Jupiter features an ~2.2x ADS magnification. While workable at mid-range, the stock reticle obscures small weak points past 100 meters.

Scoped converts the Jupiter into a true anti-materiel sniper. Because the rifle's energy beam has no projectile drop, a clear magnified sight picture lets you instantly point-and-click exposed thrusters across the map. Keep in mind that high magnification narrows your field of view; if you frequently fight inside tight Frigate corridors or struggle to track erratic close-range targets, an optic will not fix poor positioning.

2. Straight Bolt (Ergonomic Bolt): Cycling vs. Reloading

Listed under the Action Economy tree with an ergonomic bolt description, Straight Bolt prevents your camera from kicking out of ADS between individual shots.

In stock configuration, firing a round forces a manual de-scope to work the bolt, forcing you to re-acquire your target from scratch. With Straight Bolt installed, your reticle stays locked on the weak point while the next energy charge chambers.

Critical Distinction: Straight Bolt only preserves ADS during between-shot bolt cycling. It does not allow you to reload a fresh Energy Clip while aiming down sights, nor does it eliminate the Jupiter's slight pre-fire trigger delay.

3. Bigger Mag: Reload Windows vs. Ammo Economy

Bigger Mag expands your internal magazine from 5 rounds to 10 rounds, but it does not reduce your per-shot ammunition cost.

The Jupiter feeds on Energy Clips. Doubling the magazine simply means you fire 10 times before triggering a reload animation instead of 5. It does not generate free rounds out of a single inventory clip. Because the Jupiter is an ambush weapon designed to pierce armor in one or two shots before you reposition, standing exposed long enough to fire 10 consecutive bolts is rare. Skip Bigger Mag unless you routinely anchor squad boss fights where stopping to reload misses a vulnerability phase.

Upkeep Economics: When Full Amplification Stops Being Worth It

A fully amplified Jupiter is a liability if repair anxiety keeps it locked in your stash. Weighing 9.0 kg with a base sell value of 27,500 Coins and 222 shots of standard durability, the rifle already demands heavy upkeep before amplification alters its economy.

Standard vs. Amplified Repair Penalties

Amplifying any weapon increases its maximum durability ceiling, but it introduces a punishing failure state:

Standard Jupiter Repair: Restoring +50 durability on a base Jupiter costs 2x Magnetic Accelerator and 1x Complex Gun Parts.

The Amplification Death Penalty: If you die in a raid with an amplified weapon, its durability immediately crashes to 10%.

* Amplified Repair Lockouts: Restoring an amplified Jupiter requires Amplified Fragments (sourced by recycling items like the retired Anvil Splitter mod) alongside your unlocked module research. If you haven't maintained a reserve of fragments and accelerators, a single bad raid renders your rifle unusable.

The Stop-Loss Rule for Solo and Squad Raiders

Do not judge a farming route by flashy combat kills or raw junk volume—pulling nine compressors out of a turbine run means nothing if you extract with zero research progress and a damaged rifle.

Stop upgrading after unlocking Scoped (or Scoped + Straight Bolt) if buying the next node drains your repair reserve. Always keep enough materials in your stash to cover at least two full durability restorations (4x Magnetic Accelerators, 2x Complex Gun Parts, and a buffer of Amplified Fragments) before spending rare components on secondary convenience nodes like Bigger Mag.

Is the fully amplified Jupiter worth the grind in ARC Raiders?

Unlocking all three nodes is only worth the investment for dedicated squad snipers with a surplus of Mk. V modules and repair materials. Most Raiders get 90% of the rifle's peak performance by unlocking Scoped and Straight Bolt, while skipping Bigger Mag to conserve resources for upkeep.

Can you equip all three Jupiter upgrades at the same time?

Yes, Bigger Mag, Scoped, and Straight Bolt are not mutually exclusive and stack permanently on the same rifle. Once you unlock the base tree with an Amplification Module Mk. V at a Level 4 Research Station, you can apply all three upgrades in any order.

Does Bigger Mag make Jupiter Energy Clips last longer?

No, Bigger Mag increases loaded capacity from 5 to 10 rounds without reducing per-shot ammunition consumption. It eliminates one reload interruption during extended firing windows, but you still burn through your inventory's Energy Clips at the exact same rate per shot fired.

Does the Ergonomic Bolt (Straight Bolt) let you reload while aiming?

No, Straight Bolt only lets you cycle the bolt action between shots while staying in ADS. Once your 5-round or 10-round magazine is empty, your character must still exit the scope view to perform a full Energy Clip reload.

What happens to an amplified Jupiter when you die in a raid?

Upon death, an amplified weapon drops to 10% durability and requires Amplified Fragments alongside learned module research to repair. Unlike a standard Jupiter that only needs 2x Magnetic Accelerators and 1x Complex Gun Parts for +50 durability, maintaining an amplified build requires a dedicated stash of endgame salvage.