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Icons Campaign.png Unlocked through an assignment
Requires Engineer Level 20
Purchased for:
Credit.png 8200 Credits
Jadiz 35 Jadiz
Magnite 65 Magnite
Umanite 100 Umanite
Initial Stats
Damage 21
Magazine Size 36
Max Ammo 180
Rate of Fire
(per second)
Reload Time 3s
Lock-On Range 25m
Max Targets 12
Lock-On Time 100%
Acquire Lock Threshold 10°
Lose Lock Threshold 70°
Armor Breaking 150%

Take a standard, high-grade submachine gun and, bolt a semi-sentient AI core to the side of it, and rig it up with several sophisticated tracking packages, arm that resulting abomination with prototype rounds that interface directly with the onboard systems, and you have the aptly named LOK-1 Smart Rifle - a glorious bit of kit any engineer worth their salt would be happy carrying.

— Item Description

The LOK-1 Smart Rifle is an unlockable primary weapon for the Engineer. It is a heavily augmented submachine gun with multiple electronic attachments and wiring surrounding the weapon. In the front, a small mechanical "eye" rests on top of the barrel with a foregrip attached below. A hinged metal arm supports a loaded magazine that contains a munitions window and a pull tab.

The Smart Rifle is one of the few weapons that has an alternative firing mode, although it is a lot more unique. Tapping the fire button will cause a single shot to be fired normally. Holding down the fire button however, will cause a targeting interface to appear and begin placing incremental indicators onto enemies within range, along with visible tracers that lead from the gun barrel to the enemy. Upon releasing the fire button, the weapon fires at all enemies that were locked on with the amount of bullets corresponding with the number displayed on each indicator. When a locked on enemy is killed, any excess locks will not cause additional bullets to be fired.

When using this alternative firing mode, bullets follow the path of the tracer which means that firing at weakpoints will require you to position the tracer appropriately. This also means that anything blocking the tracer will be impacted instead, which can include terrain, teammates, or other enemies.


There are five tiers of modifications and each tier has two to three upgrades. Only one modification can be equipped per tier.

LOK-1 Smart Rifle Modifications
Mod Effect Description Price
Tier 1 Icon Upgrade DamageGeneral.png
Increased Caliber Rounds
+6 Damage The good folk in R&D have been busy. The overall damage of your weapon is increased.
Credit.png 1200 Credits
Bismor 25 Bismor
Icon Upgrade Ammo.png
Expanded Ammo Bags
+72 Max Ammo You had to give up some sandwich-storage, but your total ammo capacity is increased!
Credit.png 1200 Credits
Magnite 25 Magnite
Tier 2
Icon Upgrade Aim.png
Macro Lens
x0.2 Acquire Lock Threshold,

x2 Lock-On Range

The Macro Lens decreases the size of the lock on area for extra tight control and focused targeting while also greatly extending the lock on range.
Credit.png 2000 Credits
Umanite 24 Umanite
Bismor 15 Bismor
Icon Upgrade Angle.png
CCD Array Add-On
+1.3° Acquire Lock Threshold,

x1.5 Lose Lock Threshold

The CCD Array Add-On enables the camera to keep track of enemies in a wider angle and also expands the angle at which new locks can be acquired.
Credit.png 2000 Credits
Magnite 15 Magnite
Enor Pearl 24 Enor Pearl
Icon Upgrade Distance.png
Zoom Lens
+10m Lock-On Range The Zoom Lens increases the range of your camera, enabling you to lock on to targets farther away.
Credit.png 2000 Credits
Croppa 15 Croppa
Jadiz 24 Jadiz
Tier 3
Icon Upgrade Special.png
Electro-Chemical Rounds
+20% Damage to Electrified Targets

and +20% Damage to Burning Targets

A simple copper wire and some reactive chemicals makes your rounds pack an extra punch with electricity and high temperatures.
Credit.png 2800 Credits
Jadiz 50 Jadiz
Umanite 35 Umanite
Icon Upgrade Light.png
SMЯT Targeting Software™
+Smart Targeting This premium software update makes your camera prioritize targets with lower health and avoids placing more locks necessary. Now that's SmRt(TM)!
Credit.png 2800 Credits
Enor Pearl 50 Enor Pearl
Bismor 35 Bismor
Icon Upgrade BulletPenetration.png
Piercing rounds
+1 Max Penetrations Shaped projectiles designed to over-penetrate targets with a minimal loss of energy. In other words: Fire straight through an enemy!
Credit.png 2800 Credits
Umanite 35 Umanite
Bismor 50 Bismor
Tier 4
Icon Upgrade Duration.png
Shutter Speed Sensor
-20% Lock-On Time The shutter speed sensor reduces the time between lock ons, helping you reach a full lock on faster.
Credit.png 4800 Credits
Jadiz 50 Jadiz
Magnite 48 Magnite
Enor Pearl 72 Enor Pearl

Aperture Extension
+6 Max Targets The aperture extension helps the camera sort out more light and minimizes distortion, increasing the amount of lock ons you can place on targets.
Credit.png 4800 Credits
Jadiz 72 Jadiz
Magnite 72 Magnite
Umanite 48 Umanite
Tier 5
Icon Upgrade Electricity.png
Electric Generator Mod
+Targets with 3 or more Locks are Electrocuted when shot An electrical generator has been wired into the lock on mechanism, turning rounds electrical when a lock on threshold is passed.
Credit.png 5600 Credits
Jadiz 140 Jadiz
Magnite 64 Magnite
Umanite 70 Umanite
Icon Upgrade DamageGeneral.png
Unstable Lock Mechanism
+Full Lock adds 20% damage to all shots Loosening a screw in the lock on mechanism bypasses the safety at a full lock on, making your rounds do more damage.
Credit.png 5600 Credits
Magnite 70 Magnite
Enor Pearl 64 Enor Pearl
Bismor 140 Bismor
Icon Upgrade ScareEnemies.png
Fear Frequency
+Full Lock Scares Nearby Enemies Denting a cavity in the bullets cause them to emit a fear inducing high pitched sound when fired en masse affecting all enemies around the shooter, achievable by a full lock.
Credit.png 5600 Credits
Croppa 140 Croppa
Magnite 64 Magnite
Bismor 70 Bismor


Overclock calculations happen after modifiers.

LOK-1 Smart Rifle [Expand/Collapse]
Overclock Effect Description Price
Frame Overclock Clean.png
Icon Upgrade ClipSize.png
Pos.svg +12 Magazine Size

Pos.svg x1.33 Max Targets

Clean up the caves with an extended magazine combined with the ability to acquire more locks.
Credit.png 8000 Credits
Croppa 135 Croppa
Magnite 70 Magnite
Enor Pearl 90 Enor Pearl
Armor Break Module
Frame Overclock Clean.png
Icon Upgrade ArmorBreaking.png
Pos.svg More Damage against Armor when all Locks are engaged Shots do extra damage against armor when all locks are engaged.
Credit.png 7850 Credits
Croppa 125 Croppa
Magnite 90 Magnite
Umanite 80 Umanite
Explosive Chemical Rounds
Frame Overclock Balanced.png
Icon Upgrade Explosion.png
Pos.svg +Explosive Chemical Rounds
Neg.svg -5 Damage

Neg.svg -36 Max Ammo

Every enemy with 3 locks triggers an explosion on the last shot.
Credit.png 8500 Credits
Croppa 65 Croppa
Jadiz 130 Jadiz
Magnite 95 Magnite
Seeker Rounds
Frame Overclock Balanced.png
Icon Upgrade Aim.png
Pos.svg +Seeker Rounds
Pos.svg x1.33 Lose Lock Threshold

Neg.svg 47% slower Burst Fire Rate
Neg.svg +0.5 Reload Time

Locked shots will always hit their target even finding their way around heavy armor and the system can maintain locks at more extreme angles. However the extra processing load reduces the rate of fire for locked shots and more care must be taken when reloading the advanced rounds.
Credit.png 8150 Credits
Magnite 135 Magnite
Umanite 95 Umanite
Bismor 60 Bismor
Frame Overclock Unstable.png
Icon Upgrade Weakspot.png
Pos.svg +50% Weakpoint Damage Bonus at Full Lock
Pos.svg x0.5 Lock-On Time

Neg.svg -12 Max Ammo
Neg.svg -12 Magazine Size
Neg.svg x0.66 Max Targets

Tweaks to the firecontrol mechanism and camera software bring lightning fast lock acquisition and more weakspot damage when all locks are used, However the max number of locks is reduced as is the magazine and total ammo capacity.
Credit.png 8750 Credits
Jadiz 105 Jadiz
Magnite 65 Magnite
Enor Pearl 130 Enor Pearl
Frame Overclock Unstable.png
Icon Upgrade Sticky.png
Pos.svg +Slowdown Locked Targets

Neg.svg x1.5 Lock-On Time
Neg.svg Limited Lock-On Duration of 5 seconds

Slow down enemies by locking on to them, the more locks the slower an enemy gets! The down side is a slower lock-on rate and the locks can only be maintained for a short time before the system resets.
Credit.png 8950 Credits
Croppa 125 Croppa
Magnite 80 Magnite
Umanite 100 Umanite

Stats breakdown[]

Understanding the Weapon[]

The Lok-1 will sequentially target all enemies in it's scanning range, prioritizing enemies closest to the center of the 'crosshair' (note: the bracket). If the smRt upgrade is not taken, it will paint as many locks as possible per target until reaching the maximum lock capacity. Note however, that the Lok-1 will only ever use the number of bullets needed to actually kill an enemy essentially meaning that no ammo is wasted considering that the player does not waste bullets on terrain, etc. Holding M1 will initiate 'scanning' mode to target enemies and acquire locks, this is visually represented on screen by a loading bar with the text "SCANNING".

The Lok-1 will display a trajectory highlighting the bullet pathfinding for each locked enemy. This orange glowing line can be manipulated by continuing to hold down the lock button and changing the player's perspective. However there is a limit to how far the player can view before the lock's disengage. One may also get a stronger arc by jumping or using perks such as dash to extend the curvature of the bullet trajectory (such as to hit weakspots). Doing this is important to maximize ammo efficiency with the weapon as the Lok-1 has a crippling low amount of maximum ammo.

Compared to the Stubby and the Warthog , the Lok-1 boasts the longest effective range of any weapon in the engineer's arsenal, with a maximum scanning range of up to 35m with appropriate upgrades. As a result the Lok-1 is incredibly effective at disposing of mactera and spitters.

Unique Modifications[]

The SmRt upgrade prevents 'overlocking' of enemies, by default the Lok-1 will put as many locks as possible on an enemy but only use the amount of bullets neccessary to actually kill the enemy, the SmRT thus acts a quality of life assurance so all bullets are equally dispersed between locked targets, saving time to scan and refire should the player opt to use it.

Unique Overclocks[]

Explosive Chemical Rounds[]

Frame Overclock Balanced.png
Icon Upgrade Explosion.png

Targets with 3 or more Locks on them will trigger an explosion on the last shot locked onto the enemy (or the locked-on shot that kills the enemy), dealing 50 Area Damage and 50% Base Fear Chance in a 4m radius around them (2m Max Damage Radius, 50% Falloff).

Seeker Rounds[]

Frame Overclock Balanced.png
Icon Upgrade Aim.png

Locked shots always hit their targets and ignore armor. The interval between shots in a burst is multiplied by 1.9 which reduces the Burst Fire Rate from 16.67 (1/0.06) to 8.77 (1/0.114), which is approx. -47% Burst Fire Rate.

Seeker Rounds' bonus to Lose Lock Threshold stacks multiplicatively with CCD Array Add-On for a total of 200% if both are equipped.


Frame Overclock Unstable.png
Icon Upgrade Sticky.png

Each Lock on an enemy slows it down by 10% (x0.9), and the slows multiply together on each enemy.


Each modification that is purchased advances a mastery bar by one unit.

Mastery unlocks:

  • Three modifications – First Stripe Weapon Paintjob Icon Skin First Stripe.png
  • Seven modifications – Deepcore Weapon Paintjob Icon Skin Deepcore.png
  • All modifications – The Company Special Weapon Paintjob Icon Skin The Company Special.png