Ulterior Observation - Legendary Machine Gun

Ulterior Observation is a Machine Gun Stasis Heavy in Destiny 2. Review its base stats, perk pool, and masterwork options.

Weapon overview

Machine Gun - Stasis - Heavy - Aggressive Frame

Source: Exploring Kepler

A triptych with three different images. Three different mediums. Three different artists.

High damage, high recoil.

Arrowhead Brake
Lightly vented barrel.
• Greatly controls recoil
• Increases handling speed
Chambered Compensator
Stable barrel attachment.
• Increases stability
• Moderately controls recoil
• Slightly decreases handling speed
Corkscrew Rifling
Balanced barrel.
• Slightly increases range and stability
• Slightly increases handling speed
Extended Barrel
Weighty barrel extension.
• Increases range
• Decreases handling speed
• Moderately controls recoil
Fluted Barrel
Ultra-light barrel.
• Greatly increases handling speed
• Slightly increases stability
Full Bore
Barrel optimized for distance.
• Greatly increases range
• Decreases stability
• Slightly decreases handling speed
Hammer-Forged Rifling
Durable ranged barrel.
• Increases range
Polygonal Rifling
Barrel optimized for recoil reduction.
• Increases stability
Smallbore
Dual strength barrel.
• Increases range
• Increases stability

Extended Mag
This weapon has a greatly increased magazine size, but reloads much slower.
• Greatly increases magazine size
• Greatly decreases reload speed
• Increases airborne effectiveness
Alloy Magazine
Faster reload when the magazine is nearly empty.
Appended Mag
This weapon's magazine is built for higher capacity.
• Increases magazine size
Armor-Piercing Rounds
Rounds cause extra damage to combatants' shields and overpenetrate targets.
• Slightly increases range
High-Caliber Rounds
Shots from this weapon knock the target back farther.
• Slightly increases range
Ricochet Rounds
Rounds ricochet off hard surfaces.
• Increases stability
• Slightly increases range
Flared Magwell
Optimized for fast reloading.
• Slightly increases stability
• Greatly increases reload speed
Light Mag
Improved reload and range.
• Increases reload speed
• Slightly increases range

Moving Target
Increased movement speed and target acquisition when moving while aiming down sights.
Subsistence
Defeating targets partially reloads the magazine from reserves.
Headstone
Precision final blows spawn a [Stasis] Stasis crystal at the victim's location.
Envious Arsenal
Dealing damage with both other weapons before readying this weapon refills it from reserves.
Built to Blast
Gain aim assist, stability, and flinch resistance while you have Woven Mail, Frost Armor, or Void Overshield.
Feeding Frenzy
Each rapid kill with this weapon progressively increases reload speed for a short time.
Demolitionist
Kills with this weapon generate grenade energy. Activating your grenade ability reloads this weapon from reserves.

Adagio
After defeating a target, this weapon fires, charges, or draws more slowly and deals increased damage for a brief time.
Rimestealer
Destroying a Stasis crystal or defeating a frozen target with this weapon grants you Frost Armor.
Dynamic Sway Reduction
Improves accuracy and stability while continuously holding down the trigger.
Binary Orbit
Elemental final blows opposite this weapon increase damage for a short duration. Darkness final blows boost Arc, Solar, and Void weapons. Light final blows boost Stasis, Strand, and Kinetic weapons.
Killing Tally
Kills increase this weapon's damage until it is stowed or reloaded.
Dragonfly
Precision kills create an elemental damage explosion.
Closing Time
Improves range, accuracy, and handling as the magazine gets lower.

Exhaustive Research
Aiming down sights at a target for a short time loads a homing micro-missile.