Brass knuckles return to the Grand Theft Auto VI arsenal as a concealable, low-tier melee option pitched squarely at the street-level encounters that define Vice City after dark. Designed to be palmed in a closed fist, slipped into a jacket pocket, or hidden inside a clutch bag, the weapon trades raw lethality for accessibility, intimidation value and the kind of brutal physicality that suits a brawl outside a Washington Beach nightclub or a debt-collection visit in Little Haiti. Equipping a set converts the player character's unarmed moveset into a heavier, slower but considerably more punishing brawling style, with hooks that stagger on contact, faster knockouts on unarmoured civilians, and a substantially higher chance of triggering a bloody finisher animation on a downed opponent.
The category covers three principal variants encountered through both shopfront purchase and looted pick-ups: traditional chrome-plated dusters that gleam under neon strip lights, spiked "war" knuckles favoured by outlaw biker clubs along the Leonida coast, and weighted sap gloves – leather mitts with a shot-bag sewn across the knuckle line – associated with club bouncers and loan-shark enforcers. Each variant produces a distinct sound design on impact, from a clean metallic crack to the muffled thud of lead-loaded leather.
The knuckleduster is a centuries-old design that concentrates the kinetic energy of a punch into a small, hard contact area, dramatically increasing the likelihood of soft-tissue disruption and bone fracture in the target while spreading reaction force across the wielder's palm to protect the fingers (Wikipedia, 2026). Although the name implies brass construction, surviving examples have been forged from cast iron, steel, lead, aluminium, hardwood and, more recently, glass-filled polymers marketed as undetectable by airport metal detectors (Wikipedia, 2026).
Mass production accelerated during the American Civil War, when soldiers either purchased manufactured sets from sutlers or cast their own in camp by melting bullets into dirt moulds (Wikipedia, 2026). By the late nineteenth century, combination weapons such as the French Apache revolver fused knuckleduster, folding blade and pinfire pistol into a single concealable unit favoured by Parisian street gangs (Frost, 1972). The First World War saw both the US Model 1917 and Model 1918 Mark I trench knives issued with cast-brass bow grips, with the Model 1918 later reissued to American paratroopers during the Second World War (Lewis, 1997).
Real-world legality is heavily restricted: knucks are prohibited outright in the United Kingdom under Schedule 1 of the Criminal Justice Act 1988 (Offensive Weapons) Order, banned across most of continental Europe, and outlawed in roughly twenty US states as of 2025, with several jurisdictions extending bans to plastic and ceramic variants (Wikipedia, 2026; Legislation.gov.uk, 1988). This black-market status feeds directly into the in-game economy, where the weapon is sold through pawnbrokers, biker fences and back-room counters at strip-mall gun stores rather than mainstream licensed retailers.
Equipping any duster variant overrides the default unarmed animation set. Standard jabs are replaced with looping hooks and overhand rights that carry roughly double the stagger value of a bare fist, while the player's grapple becomes a knee-and-pommel combination ending in a downward hammer-fist. Chrome dusters offer balanced damage and swing speed; spiked knuckles deal additional bleed damage over time, applying a wound state that drains NPC health even after the player disengages; weighted sap gloves swing more slowly but possess the highest knockout chance, capable of dropping unarmoured pedestrians in a single clean shot to the temple.
Concealment is the defining mechanical advantage. Unlike a baseball bat or machete, knuckles do not visibly alter the character silhouette when sheathed, meaning the player can walk past LCPD checkpoints, enter clubs through metal-detector arches (with a small detection-risk modifier on metal variants) and approach targets in mission scenarios without provoking the pre-combat alert state. This makes the weapon especially useful in intimidation missions where producing a firearm would escalate the wanted level prematurely.
Within the game's diegetic world the knuckleduster sits at the intersection of nightlife, organised crime and old-school masculinity. Bouncers at Ocean Drive clubs wear sap gloves openly as part of their uniform; Cuban and Haitian crews in the eastern barrios favour spiked variants tattooed with crew insignia; while ageing mob enforcers reach for chrome dusters as a nostalgic nod to a pre-firearm era of leg-breaking. The weapon also appears in the game's hand-to-hand fight-club side activity, where wagering on bare-knuckle bouts is a recurring source of dirty money.
Frost, H. G. (1972) Blades and barrels: six centuries of combination weapons. El Paso: Walloon Press.
Legislation.gov.uk (1988) The Criminal Justice Act 1988 (Offensive Weapons) Order 1988: Schedule. Available at: https://legislation.gov.uk/uksi/1988/2019/schedule//made (Accessed: 14 May 2026).
Lewis, J. E. (ed.) (1997) The handbook of the SAS and elite forces: how the professionals fight and win. London: Robinson Publishing.
Wikipedia (2026) Brass knuckles. Available at: https://en.wikipedia.org/wiki/Brass_knuckles (Accessed: 14 May 2026).