How to Modify Guns in Cyberpunk 2077: Attachments, Upgrades, and Crafting Explained

Weapon modification in Cyberpunk 2077 is one of the most rewarding systems in the game — and one of the most misunderstood. Players often overlook it entirely in early hours, then wonder why their gear feels underpowered by Act 2. Whether you're fine-tuning a sniper rifle for stealth builds or maxing out a pistol for a Solo run, understanding how gun modification actually works changes how you approach combat entirely.

The Three Core Ways to Modify Weapons 🔧

Cyberpunk 2077 gives you three distinct modification pathways, and they work differently enough that it's worth treating them separately.

1. Attachment Slots (Scopes and Muzzles)

Every ranged weapon has a fixed number of attachment slots — typically one for a scope and one for a muzzle mod. These are the most visible modifications and have immediate, measurable effects.

• Scopes affect zoom level, aim assist, and visibility in low-light conditions
• Muzzle mods include silencers (suppressors), compensators for recoil reduction, and barrel extensions that alter range or damage type

Attachments are not craft-dependent. You can swap them freely at any time from your inventory — no workbench required. This makes them the most accessible form of customization, especially early in the game.

2. Weapon Mods (Internal Modification Slots)

Separate from attachments, weapons can have internal mod slots that accept dedicated weapon mods — items like the Crunch (boosts physical damage), Neofiber, or elemental mods that add burn, shock, or poison effects.

The number of mod slots a weapon has depends on its rarity tier:

Higher-rarity versions of the same weapon aren't just stat bumps — they give you more surface area for customization. A Legendary Militech Canto versus a Rare version of the same weapon plays meaningfully differently once all slots are filled.

Mods are installed directly from the inventory screen when you inspect a weapon. You'll see open slots displayed below the weapon stats. Note: once a mod is installed in some versions of the game, removing it may destroy the mod — check your current patch behavior before committing expensive mods to weapons you plan to replace soon.

3. Upgrading Weapons at a Crafting Bench

The crafting system lets you increase a weapon's base stats by spending crafting components. This is done at any crafting bench found throughout Night City (or using the crafting menu with the right perks unlocked).

Upgrading raises the weapon's item level, which scales its base damage and armor penetration upward. This is particularly valuable for iconic weapons — unique guns tied to questlines or specific vendors that cannot be found at higher rarities through drops. Upgrading lets you keep an iconic weapon relevant deep into the late game.

To upgrade effectively, you'll need:

• Common, Uncommon, Rare, or Epic crafting components (depending on the upgrade tier)
• Points invested in the Technical Ability attribute, specifically the Crafting skill tree
• The Edgerunner Artisan perk unlocked to craft and upgrade Legendary-tier items

Without Technical Ability investment, your upgrade options are limited — which is one of the key variables that separates weapon customization outcomes between different character builds.

How Perks Shape Your Modification Options ⚙️

Your attribute and perk choices directly gate what modifications are available to you. This is the part many players underestimate.

• Technical Ability (Crafting tree): Unlocks crafting of higher-tier mods, weapon upgrading, and the ability to craft iconic weapons from blueprints
• Cool (Stealth-adjacent perks): Indirectly affects silencer viability and stealth playstyles that make certain muzzle mods more valuable
• Reflexes: Influences handling bonuses that interact with certain weapon types

If you're running a build that doesn't invest in Technical Ability, weapon modification still works — you're just working with found mods and attachments, not crafted ones. That's a valid playstyle, but it means your customization ceiling is lower.

Iconic Weapons: A Special Case

Iconic weapons have their own upgrade path and often come with unique built-in perks that can't be replicated through standard mods. Some iconics have special modification slots that only accept specific mod types.

These weapons are frequently quest rewards or hidden finds, and their upgrade blueprints are tied to the weapon itself. You won't craft them from scratch — you find them, then invest crafting components to keep them competitive.

What Varies Between Players 🎮

Gun modification in Cyberpunk 2077 isn't a single fixed system — the experience differs substantially based on:

• Build archetype: Netrunner, Solo, Stealth, and Tech builds each have different weapon priorities and benefit from different mod types
• Playstyle: Aggressive close-range players get more from damage mods; stealth players prioritize silencer availability and reload speed
• Technical Ability investment: Determines whether you can craft mods or rely solely on loot
• Point in the game: Modification options in the early game are narrower; the system opens up substantially after leveling
• Patch version: Cyberpunk 2077's post-launch updates and the 2.0 patch (accompanying Phantom Liberty) reworked perk trees and some crafting mechanics — the specifics of mod slot behavior and upgrading costs shifted meaningfully between versions

The same weapon in two different players' hands — with different builds, different mods installed, and different upgrade levels — can perform like two entirely different guns. Which combination works best depends entirely on how you're playing.