Key Takeaways
The SMG Mk II is the GTA Online conversion of the standard SMG, adding the Mk II weapon system rather than serving as a separate Story Mode firearm. Its main distinction is access to specialized ammunition and additional workshop modifications, with some options gated behind Gunrunning research. It remains a close-to-mid-range automatic weapon, but its expanded configuration gives it more role-specific choices than the base SMG.
Online-only Mk II conversion
The SMG Mk II belongs to GTA Online and is produced by converting the standard SMG at a Weapon Workshop; it should not be treated as a Story Mode weapon.
Special ammunition defines the upgrade
Its most important functional difference is access to Mk II ammunition choices, including options intended for effects such as armour penetration, incendiary damage, or improved performance against specific targets.
Research can gate ammunition
The weapon can be converted at a workshop, but particular special-ammunition types may require the corresponding Gunrunning research unlock before they can be fitted.
Flexible automatic fire
The SMG Mk II keeps the base weapon’s practical close-to-mid-range automatic role while allowing its ammunition and attachments to be selected for the situation rather than relying on one universal configuration.
Configuration has trade-offs
Mk II ammunition and magazine choices are situational; selecting a specialized option changes how the weapon is used and does not make every configuration equally suitable for every engagement.
A broader option set than the base SMG
Compared with the standard SMG, the Mk II’s defining advantage is its workshop upgrade path and special-ammunition support, not merely a cosmetic change to the same weapon.
Overview
SMG Mk II is the conversion of the standard SMG, turning a compact automatic weapon into a more configurable close- to medium-range firearm. Its defining distinction is access to the Mk II weapon system rather than a simple cosmetic change.
The weapon belongs to GTA Online rather than Story Mode, and its availability is tied to the conversion system. That places it in the progression of upgraded Online firearms: players begin with the standard SMG and can later convert that weapon when the relevant workshop and upgrade access are available. The conversion should therefore be understood as a separate Online progression state, not as a second Story Mode pickup.
In combat, the SMG Mk II occupies the flexible automatic-weapon role. It is suited to encounters where a player needs sustained fire while moving, entering buildings, fighting from vehicles, or engaging targets across ordinary close and medium distances. Its compact role separates it from heavier machine guns, while its automatic fire gives it a different handling purpose from pistols and other sidearms.
What makes the Mk II version noteworthy is the broader weapon-system customization attached to it. Its conversion supports compatible attachments and specialized ammunition choices, allowing the player to configure the weapon around a preferred tactical use rather than treating the base SMG's configuration as fixed. Those options can change how the weapon fits a loadout, but they do not make every configuration equally suitable for every encounter.
The SMG Mk II is consequently best viewed as a modular Online upgrade for players who want an automatic firearm with more configuration choices than the standard SMG. Its practical value depends on access to the conversion system, the selected equipment, and the role the rest of the loadout already covers. Comparisons with the base SMG should distinguish conversion-based customization from the weapon's underlying compact-SMG identity.
Stats & Performance
| Stat | Value |
|---|---|
| Weapon class | SMG |
| Mode | GTA OnlineThis Mk II weapon variant is not a Story Mode weapon. |
| Ammunition | SMG ammunition |
| Base magazine | 20 roundsStandard Mk II magazine configuration; larger magazine options are separate attachments. |
Requirements & Scaling
| Requirement | Value |
|---|---|
| Upgrade requirement | Weapon WorkshopThe base SMG must be converted through a Weapon Workshop before Mk II-specific options become available. |
Moveset & Combat Behavior
In , the SMG Mk II retains the platform’s fully automatic firing pattern while adding the Mk II weapon-system options that determine how it behaves in a fight. Its practical role remains close- to mid-range automatic fire: sustained bursts are easy to apply at short distance, while longer sprays are less dependable as spread and recoil accumulate. The conversion does not turn it into a precision rifle or add a separate charged attack.
Automatic fire and range control
The SMG Mk II is most controllable when the shooter keeps engagements short or uses brief bursts at the edge of its practical range. Holding the trigger produces continuous automatic fire rather than a selectable burst or semiautomatic pattern. Firing from cover and releasing the trigger between engagements helps preserve accuracy; the weapon’s handling does not remove the normal trade-off between volume of fire and precision. It is therefore better suited to rapidly pressuring nearby targets than to deliberate long-range shots.
Mk II ammunition changes
Its defining mechanical difference is access to Mk II ammunition through a . Tracer rounds provide a visible firing effect, while Hollow Point rounds are intended to improve performance against unarmored targets. Incendiary rounds can ignite a target when their special effect triggers. Armor Piercing rounds favour engagements involving armored protection, and Full Metal Jacket rounds are associated with improved interaction against vehicle protection and bullet-resistant cover. These options change the weapon’s matchup rather than simply increasing every form of damage. The selected ammunition is a loadout choice and must be changed through the weapon’s modification system, not toggled as a moment-to-moment firing mode.
Attachments and sustained use
The Mk II conversion supports compatible muzzle, sight, grip, magazine and cosmetic modifications. A suppressor changes the weapon’s firing signature, but it does not make automatic fire accurate at every distance. Magazine choices affect how the weapon is managed during a push: larger capacity can reduce the frequency of interruptions, while reloading remains a meaningful vulnerability during sustained automatic fire. and magazine configuration should be considered together because the Mk II system treats them as separate equipment choices with different combat purposes.
Upgrades & Customization
| Option | Effect | How to unlock |
|---|---|---|
| SMG Mk II conversion | Converts the standard SMG into the Mk II variant and enables Mk II-specific magazines, sights, barrel options, muzzle devices and special ammunition. | Weapon Workshop; GTA Online |
| Option | Effect |
|---|---|
| Extended Magazine | Increases the SMG Mk II's ammunition capacity compared with the standard magazine. |
| Drum Magazine | Provides a larger ammunition capacity than the standard and extended magazine options. |
| Option | Effect |
|---|---|
| Holographic Sight | Replaces the default sight picture with a holographic optic. |
| Small Scope | Adds a compact optical sight for aimed fire. |
| Grip | Changes the weapon's handling configuration. |
| Suppressor | Reduces the weapon's report and changes its firing signature. |
| Muzzle Brake | Changes the muzzle configuration and firing handling. |
| Heavy Barrel | Changes the barrel configuration and modifies the weapon's performance profile. |
| Option | Effect | How to unlock |
|---|---|---|
| Tracer Rounds | Adds visible tracer effects to fired rounds. | Relevant Gunrunning research unlock |
| Incendiary Rounds | Adds an incendiary effect to the ammunition. | Relevant Gunrunning research unlock |
| Armor Piercing Rounds | Uses ammunition configured for improved performance against armored targets. | Relevant Gunrunning research unlock |
| Full Metal Jacket Rounds | Uses full-metal-jacket ammunition with a different target-interaction profile. | Relevant Gunrunning research unlock |
| Hollow Point Rounds | Uses hollow-point ammunition with a different target-interaction profile. | Relevant Gunrunning research unlock |
How to Get SMG Mk II
- GTA Online; the standard SMG; access to a Weapon Workshop; sufficient in-game funds for the conversion.
- SMG Mk II is not available in GTA V Story Mode, and it is not a one-per-playthrough or missable pickup.
- 01In GTA Online, purchase or otherwise obtain the standard SMG from Ammu-Nation, then take it to a Weapon Workshop. Select the SMG and choose the Mk II conversion option; the conversion is a paid weapon upgrade rather than a mission reward or enemy drop. A Weapon Workshop is available through properties or vehicles such as the Mobile Operations Center, Avenger, or Terrorbyte. The exact workshop access route depends on which eligible facility or vehicle you own.
Story Mode
SMG Mk II is a GTA Online weapon variant and is not available as a Story Mode weapon.
GTA Online
- Requires
- Own the base SMG and use a Weapon Workshop to convert it to the Mk II variant.
The variant is part of GTA Online's Mk II weapon system, introduced with the Gunrunning update. Its workshop conversion and subsequent Mk II options are separate from the base SMG's ordinary availability.
Builds & Best Uses
Strengths
- In GTA Online, it combines automatic SMG handling with Mk II ammunition options, allowing the loadout to be adapted for unarmoured targets, incendiary effects, or improved penetration where those rounds are available.
- Its compact SMG role is useful during movement and close engagements, including situations where vehicle weapon access favours an SMG over a longer firearm.
- The Mk II platform supports meaningful weapon customisation, so the player can choose between general-purpose ammunition and more specialised combat effects rather than treating the weapon as a fixed upgrade.
Weaknesses
- Its short-range SMG role makes it less suitable for sustained engagements across open ground than a rifle or other precision-oriented firearm.
- Special ammunition is situational: choosing a specialised effect can reduce general-purpose flexibility and, depending on the configuration, limit available magazine capacity.
- The weapon's advantages depend on access to a Weapon Workshop and the selected Mk II ammunition setup; without those options, its distinction from the base SMG is narrower.
Best uses
- Use it for close-quarters fights, urban encounters, and moving engagements where automatic fire and compact handling matter more than long-range precision.
- Select ammunition around the target: general-purpose rounds for routine encounters, Hollow Point rounds against unarmoured opponents, Incendiary rounds when their fire effect is useful, and Full Metal Jacket rounds when penetration is the priority.
- Keep it as a vehicle-friendly automatic weapon for short-range combat, while carrying a rifle or precision weapon for open areas and distant targets.
Weapon Comparisons
| Attribute |  SMG |  Assault SMG |  Combat PDW |
|---|---|---|---|
| Relationship to SMG Mk II | Converts to SMG Mk II through the GTA Online Weapon Workshop; the Mk II adds weapon-system options rather than being a separate class. | A compact automatic alternative with its own handling and attachment profile; it is not an SMG Mk II conversion. | Compact automatic weapon with a distinct platform and handling profile rather than the SMG Mk II upgrade path. |
| Distinctive comparison | Choose the base form when Mk II conversion, special ammunition, or expanded attachment options are not relevant. | A practical alternative for players who prefer a compact automatic weapon without using the SMG Mk II platform. | Consider it when a compact SMG-class option suits the loadout better than the workshop-based SMG family. |
| Best fit when choosing between them | — | — | — |
Lore and Design
Design and development context
The SMG Mk II belongs to ’s Mk II weapon system, which expanded existing firearms through the -era and related upgrade infrastructure. Its defining design idea is modular progression: rather than replacing the standard SMG outright, the Mk II conversion gives the same weapon platform access to additional modifications and ammunition options. This places it within GTA Online’s broader progression from ordinary Ammu-Nation firearms toward workshop-customised equipment. No separate Story Mode lore, character ownership, or canonical faction relationship is established for the SMG Mk II itself. Its significance is therefore systemic rather than narrative: it represents the game’s shift toward customisable, research-linked weapon variants in Online. Claims identifying the SMG Mk II as a specific real-world firearm are omitted because visual resemblance alone does not document an official inspiration.
Trivia
- In GTA Online, “Mk II” identifies the SMG as part of the Weapon Workshop conversion system rather than as an entirely separate pickup model. The conversion places the standard SMG in the same upgrade family as other Mk II firearms and enables weapon-specific modification options unavailable to the unconverted version.
- The SMG Mk II can be configured with several specialized ammunition types in GTA Online, making its ammunition choice a functional loadout decision rather than a cosmetic attachment change. Availability of those options depends on the relevant Weapon Workshop progression and research requirements.
