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Weapon Attachment Once Human
Screenshot: PC Invasion

All weapon accessories and attachment locations in Once Human

Gear up and go.

Owning a weapon is fine, but without attachments and accessories, it’s never going to reach its full potential. There are tons to pick and choose from in Once Human, but most of the best weapon attachments need to be sought out in their specific location.

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All weapon attachments and mod locations

Here is the full list of the current weapons mods, attachments, and accessories in Once Human.

Broken Delta

Once Human Map Attachments 1
Screenshot: PC Invasion

This is the starting area in Once Human, so it’s a great place to begin picking up various attachments for your gear. There are 10 weapon attachments found here.

NumberAttachmentWeapon TypeLocation and quest
1Vertical GripRifleTo the east of the Gaia Cliff Monolith, you will find a barrier on the ground by the base of the rocks. Use a weapon with a fire element to destroy the barrier to grab this weapon accessory in Once Human.
2Cobra GripSMGSouth of the High Banks settlement, you will find this puzzle just in the grass, off the side of the road. Investigate the camera there, and mimic the emote it does. You need to mimic the pose before it disappears.
3Recon Combat OpticRifleJust south of Lakeheart Camp, you will find some floating cars. Here, you can interact with the parking meter to start a timed challenge to climb to the top of them all. Doing so within the time limit will award you this weapon accessory in Once Human
4Small BrakeSMG, RifleIn the south of Broken Delta, there is a small island south of Meyer’s Market. To gain access to this accessory, you must first interact with the Mysterious Painting located in the south of the High Banks settlement.
5Mid-Range opticOn the west shore of the lake by the Sunbury settlement are some stone ruins with some door frames standing. Interact with these to begin the puzzle. You must go through the doors in order of Orange, Purple, and then Black.
6Osprey SupressorPistol, SMGSoutheast of the Hearst Mudflats, look for a blue square surrounded by orange cones. Stand inside the cones and activate the mission. Look towards the broken billboard and, while staying within the cones, move your view until the billboard lines up.
7Light reflex sightPistolSoutheast of Sutherland Chemical Plant, head into the graveyard and look for the stone statues on the platform. Here you can activate the challenge by interacting with the purple gravestone. You need to turn all the statues facing inward to unlock the weapon accessory chest in Once Human.
8Tactical Flash HiderPistol, SMG, RifleJust to the west of the Sutherland Chemical Plant, you will find this lily pad challenge. The accessory can be picked up on the water by jumping across the lily pads.
9Mini Reflex Sight, Small InfraredAlong the southern coast of Broken Delta, you will find a set of roadsigns to shoot. This will unlock the weapon accessory in Once Human. The area is to the east of the Ship Graveyard.
10Front Guard GripSMG, RifleSouth of Lakeheart Camp, you will find a balloon floating above the road. Shoot the balloons quickly to unlock this next accessory.

Iron River

Heading into Iron River, we find many more weapon accessories and attachments. Like in Broken Delta, Iron River has 10 weapon attachments to collect.

All Iron River Attachments Once Human
Screenshot: PC Invasion
NumberAttachmentWeaponLocation and challenge
1Short SuppressorTo the east of the Greywater Industrial Zone, look for the hill that overlooks the Greywater Camp. Here you will find a camera that you must investigate. Watch for the emote your duplicate makes and mirror it before it disappears to unlock this attachment in Once Human.
2Integrated CompensatorSMG, RifleOn the ridge, just to the west of the Widing Ridge Farmland, you will find another camera to interact with. Mirror the duplicated emote to unlock this attachment.
3Tactical Pistol MagPistolOn the road leading north of Highland, look for the cones on the ground. Stand inside these and look for the broken billboard. While standing inside the cones, line the billboard up.
4Tactical SMG MagSMGLeave Rippleby and head west. Here, before you reach Wind Farm, you will find some vines. Burn these with a Molotov to receive the next Attachment in Once Human.
5Amended Pistol MagPistolAt the Ricci Securement Point, head into the north building. On the ground floor, in the southwest corner, there is an investigation point. Interact with this, then head into the room next door to interact with the securement unit containing a deviation. Then, look up to the left and locate the doll. Look back to the deviation to unlock the next Attachment.
6Large Laser SightNortheast of Clifton, there is a small lake. Jump across the lily pads.
7Back Guard GripSouth of East Blackfell Junction, look for the small lake. Jump across the Lily Pads to unlock this attachment in Once Human.
8Reflex SightJust southeast of East Blackfell Junction, there are a number of doorframes and some rubble. Interact with them and read the riddle on the door. Walk through the doors in order to complete the challenge.
9Light opticJust north of the Dayton Hospital, you will find a painting beside the road. Interact with this and then make your way to the road leading north out of Mirage Monolith. Here you will find the crate containing the next weapon attachment in Once Human.
10Fastened Mini Reflex SightShotgun, SMG, AR, LMGEast of the Refinery Pollution Plant you will find a car climbing time trial.

Red Sands

In the Northeast of Once Human, you can grab a total of 11 weapon accessories and attachments.

All Red Sands Attachments Once Human
Image: PC Invasion
Weapon attachmentWeaponLocation and challenge
1Extended Rifle MagRifleRight on the border of Red Sands and the Blackheart Region, above the Forsaken Monolith, you will find a lilypad jumping puzzle on the river.
2Large BrakeAR, SR, LMGTo the east of the Forsaken Monolith, you will find another billboard puzzle. Stand in the area and look towards the billboard. Line it up to receive the Once Human Weapon Attachment.
3Extended BrakeAR, LMG, ShotgunTo the east of Securement Silo PSI, you will find a balloon puzzle along the road. Pop them in the time limit.
4Integrated SuppressorAR, Sniper RifleJust south of Evergreen you will find vines that must be burnt with a Molotov.
5Precision OpticM700, AWM, M82A1Follow the road southeast of Blackfell. You will notice cones on the ground. Stand in these and line up the broken billboard.
6Tactical Rifle ScopeShotgun, Rifle, SMGSouth of Blackfell, there is a teleportation tower on a ledge. At the foot of the ledge, you will find a painting. Collect this and head to the road leaving the north of Blackfell. Here you will find the Once Human weapon attachment.
7Hammer CompensatorAR, LMGEast of Securement Silo Theta, you will find a balloon puzzle. Pop them in time to get this accessory.
8Tactical Laser SightSMG, AR, SR, LMGNorthwest of Fort Eyrie you will find vines that must be burnt with a Molotov.
9Precision Rifle ScopeRifle, SRNorthwest of the Red Sands Dangerzone, you will find a graveyard puzzle. Look for where the statue appears to be missing and stand in the location.
10Integrated Laser SightPistolSouth of Securement Silo Theta, you will find a glowing rock just to the west of the Teleportation tower. Throw a grenade at it to unlock the Once Human weapon mod.
11Multi Use Shotgun SuppressorEast of Securement Silo Theta, head over two roads until you find a camera standing out in the open. Look through it to see your double doing an emote. Copy that emote.

Blackheart Region

Right up in the north of the map, you will find yourself in the Blackheart region, which is home to nine different weapon attachments in Once Human.

All Blackheart Attachments Once Human
Image: PC Invasion
NumberWeapon AttachmentWeaponLocation and challenge
1Tactical Holographic SightSMG, RifleHead to the top northeast of the map. Line up the Billboard pieces from the starting location.
2Tactical SR MagSRSouth of the Falcon’s Perch Frontier, you will find a glowing rock that must be blown up with a grenade to unlock this weapon attachment in Once Human.
3Large LMG Drum MagLMGWest of the most eastern Teleportation Tower, you will find vines that need to be burnt with a Molotov.
4Large Optic SightSRJust west of the White Cliff settlement, you will find a camera. Use this camera to watch your duplicate do an emote. Match the Emote to unlock the next Once Human attachment.
5Compact Infrared IndicatorShotgun, SMG, AR, SR, LMGWest of Sunshine Farm settlement and up the mountain, you will find a balloon challenge. Shoot them all in the time limit to unlock this attachment.
6Tactical Combine GripSMGSouth of the White Cliff settlement, you will find another balloon puzzle.
7Forward Flash HiderSMGFirst, access the painting located on the southern border, above Securement Silo Theta. Once you have interacted with this head east from White Cliff Frontier to complete the puzzle.
8Extended Pistol MagPistolHead east from the Teleportation Tower south of White Cliffs. Here, you will find light-up door frames. Head through the Blue door.
9Weighted SMG MagSMGJust north of the White Cliff Frontier, you will find lilypads to jump across on the river.

Chalk Peak

10 more weapon accessories and attachments can be found in the Chalk Peak region of the map.

All Chalk Peak Attachments Once Human
Image: PC Invasion
NumberWeapon attachmentWeaponLocation and challenge
1Integrated Flash hiderHead south on the road leading out of Grandma Nina’s Diner and you will find a glowing rock. Throw a grenade at it to unlock this attachment in Once Human.
2Light Rifle MagAR, RifleHead east from the Believer Colony. Midway to Tall Grass, you will find a camera that shows a mirror image of yourself doing a pose. Copy the pose to unlock the next weapon attachment in Once Human.
3Folding BipodNorth of the Gaia Military Base, by the walls, you will find a box that needs to be freed from vines using a Molotov.
4Amended SR MagSRNortheast of the Evergreen Vineyard, you will find a location beside the road where you must line up the view of the Billboard.
5Small Laser SightPistolLook for the hospital in Paisley Plaza. First, answer the phone. Head towards the light at the end of the hall and enter the room on the left. Here, move the trash bin, IV pole, and monitoring device and leave.
6Calibrated LMG Drum MagLMGSouthwest of Greenlake Hill along the road, look for the cones marking the spot where you will have to stand and line up the view of the billboard.
7Small CompensatorPistolSouthwest of Furnace Lair, you will find a glowing rock in the green grassy field. Blow it up with a grenade.
8Triangle GripNorth of Hilly Homestead, you will find some empty doorframes. Activate the challenge and then walk through the door in order of blue, orange, and yellow.
9Shotgun BrakeShotgunLook for the hospital in Paisley Plaza. First, answer the phone. Head towards the light at the end of the hall and enter the room on the left. Here, move the trashbin, IV pole, and monitoring device and leave.
10Sealed Reflex SightSMG, AR, LMG, ShotgunIn the Mining Town, head to the second floor of the hospital. Here, you must answer the phone and head to the light at the end of the corridor. In the room on the left, move the sink and the water jug and leave.

Dayton Wetlands

There is only one weapon accessory in Dayton Wetland to find in Once Human. This is a Shotgun Brake and can be found east of Throughville. It is a door challenge in the field. Activate the challenge and walk through the doors in Blue, Green, and Yellow order.

All Dayton Wetlands Attachments Once Human
Image: PC Invasion

Once you’re geared up, you should probably start thinking about taking down some of the bosses.


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Author
Image of Leo Gillick
Leo Gillick
Leo is a Freelance Writer for PC Invasion. He has a degree in English Literature and Film Studies and more hours buried into videogames than he cares to admit. He has worked extensively in the Videogame and Travel writing industry but, as they say, get a job doing something you love and you'll never work a day in your life. He uses his writing as a means to support indefinite global travel with the current five year plan seeing him through Latin America.