Street Custom 'Cigarette' Pen Gun

improvised firearm

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smg

Tessera Neural Assault System TNAS-1 'Puppeteer'

assault_rifle

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cyber

Acoustic Cavity Resonance Pistol ACRP-2 'Hollowpoint'

exotic

Acoustic Marrow Shear Rifle AMSR-6 'Tutor'

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Arcturus Defense Solutions Concussive Breach Charge CBC-3 'Knocker'

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Arcturus Defense Solutions Graviton Shield Projector GSP-1 'Aegis'

heavy

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Arcturus Defense Solutions Kinetic Impactor Round KIR-10 'Hammerfall'

rifle

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Arcturus Defense Solutions Orbital Strike Designator OSD-1 'Finger of God'

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Arcturus Defense Solutions Microwave Area Denial MAD-3 'Sunburn'

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Arcturus Defense Solutions Magnetic Accelerator Rifle MAR-8 'Longbow'

rifle

Autonomous Swarm Dispersal Unit ASDU-3 'Locust'

drone

Autonomous Ferrofluid Denial Platform AFDP-2 'Tidemark'

drone

Arcturus Defense Solutions Thermal Lance TL-9 'Sunstroke'

energy

Autonomous Adhesive Denial Drone AADD-2 'Barnacle'

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Axiom Systems Biometric Lock Rifle BLR-3 'Personal'

rifle

Autonomous Swarm Dispersal Unit ASDU-4 'Locust'

drone

Axiom Systems Cognitive Grenade CG-1 'Brainstorm'

electromagnetic

Axiom Systems Perception Filter Rounds PFR-1 'Blind Spot'

exotic

Axiom Systems Synapse Interruptor SI-3 'Stutter'

electromagnetic

Axiom Systems Cortical Bomb CB-1 'Leash'

cyber-integrated

Axiom Systems Neural Disruptor ND-2 'Migraine'

electromagnetic

Ballistic Resonance Carbine BRC-6 'Kettledrum'

firearm

Axonal Stretch Resonance Lance

firearm

Bioelectric Cascade Charge

explosive

Barometric Implosion Carbine BIC-5 'Sinkhole'

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Bioelectric Induction Lance BIL-3 'Lamprey'

melee

Biometric Denial Charge BDC-1

explosive

Bioluminescent Acoustic Disruptor BAD-2 'Choral'

exotic

Capillary Disruption Pistol CDP-2 'Bruiser'

firearm

Biophotonic Retinal Cascade Emitter BRCE-5 'Flashpoint'

energy

Carrion Defense Works Bone Saw BS-3 'Butcher'

melee

Capacitive Nerve Induction Lance CNIL-1 'Threadneedle'

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explosive

Carrion Defense Works Entropic Shotgun ES-4 'Ragnarok'

shotgun

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rifle

Carrion Defense Works Nerve Agent Micro-Dart System NAMDS-1 'Whisper'

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chemical

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pistol

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chemical

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cyber-integrated

Carrion Defense Works Pathogen Delivery System PDS-4 'Typhoid'

chemical

Catalytic Aerosol Mortar CAM-3 'Lungful'

explosive

Catalytic Vapor Dispersal Charge CVDC-5

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Cavitation Pulse Carbine CPC-2 'Bends'

firearm

Catalytic Interstitial Desiccation Drone CIDD-3 'Husk'

drone

Catalytic Spore Dispersal Drone CSDD-3 'Mulch'

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Cavitation Pulse Knuckles CPK-5 'Bloodwater'

melee

Cerulean Phosphene Projector CPP-3 'Phantom Light'

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Cochlear Resonant Hemorrhage Projector

cyber

Coherent Thermal Excitation Rifle CTER-7 'Ashmaker'

energy

Coherent Radiation Scalpel CRS-7 'Suture'

energy

Corneal Piezoelectric Delamination Pistol

cyber

Cryogenic Dendrite Scatter Cannon CDSC-4 'Frostbite'

exotic

Coronal Discharge Projector CDP-9 'Sunburn'

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Cortical Bleed Emitter CBE-4 'Lacuna'

cyber

Counter-Personnel Loiter Munition CPLM-7 'Patience'

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Crystalline Synovial Pressure Rifle CSPR-2 'Kneemaker'

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Cryogenic Fracture Disbursement Mine CFDM-4

explosive

Dermal Induction Flayer DIF-2 'Saltwater'

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Cryogenic Pressure Emitter CPE-2 'Frostbite'

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Dielectric Filament Anchor Drone DFAD-1 'Cobweb'

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Dielectric Hemorrhage Emitter DHE-4 'Blister'

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Dielectric Phase Inversion Glove DPIG-4 'Secondskin'

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Dielectric Vitreous Humor Agitator DVHA-2 'Snowglobe'

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Electrochemical Dissolution Sprayer EDS-2 'Lacquer'

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Directed Overpressure Charge

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Directed Oxidation Lance DOL-3 'Rustmaker'

cyber

Electrokinetic Pulse Drone EPD-3 'Thunderhead'

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Electrochemical Vapor Seeding Drone EVSD-4 'Rainmaker'

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Electrolytic Bone Density Projector EBDP-4 'Chalk'

energy

Electrostatic Adipose Polarization Drone EAPD-2 'Render'

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Electromagnetic Overpressure Charge EOC-8

explosive

Electrostatic Dermal Adhesion Projector

exotic

Electromagnetic Pulse Grenade EPG-5 'Deadstop'

explosive

Electrothermal Chemical Carbine ETCC-5 'Flashpoint'

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Electrothermal Compression Lance ETCL-9 'Ironlung'

energy

Electrostatic Needle Array Rifle ENAR-3 'Porcupine'

firearm

Electrostatic Flensing Projector EFP-1 'Skinreader'

energy

Endolymphatic Pressure Cascade Rifle

exotic

Endothermic Synovial Disruption Rifle ESDR-1 'Lockjaw'

energy

Endocrine Cascade Volatilization Lance ECVL-5 'Burnout'

cyber

Ferroelectric Shatter Sidearm FESA-2 'Gravel'

exotic

Ferrofluid Induction Cannon FIC-6 'Ironbloom'

energy

Ferrofluid Dermal Infiltration Drone FDID-6 'Ironblush'

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Entropic Dielectric Pulse Emitter EDPE-5 'Candle'

energy

Galvanic Myofibril Lash

melee

Galvanic Marrow Projector GMP-1 'Marrowbone'

cyber

Galvanic Interstitial Fluid Displacement Lance

exotic

Galvanic Disruption Gauntlet GDG-2 'Palsy'

melee

Galvanic Periosteal Fatigue Emitter GPFE-4 'Hairline'

exotic

Galvanic Vapor Diffusion Pistol GVDP-1 'Saltlick'

exotic

Gauss Flechette Repeater GFR-3 'Needlerain'

firearm

Gravimetric Induction Pistol GIP-4 'Undertow'

energy

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Endothermic Synovial Disruption Rifle ESDR-1 'Lockjaw'

The ESDR-1 projects a focused endothermic energy beam that selectively reduces thermal energy in synovial fluid — the lubricating medium within joint capsules — causing it to thicken and partially crystallize without freezing surrounding tissue. Within two seconds of a sustained hit, the targeted joint becomes nearly immobile, the synovial membrane inflamed and packed with semi-viscous fluid. The effect is excruciatingly painful and incapacitating but does not kill, making the ESDR-1 a precision denial weapon. Helix Biosystems developed the underlying endothermic targeting array as a surgical instrument for joint preservation procedures before Arcturus Defense Solutions licensed the technology for tactical application.

Arcturus Defense Solutions

name

Endothermic Synovial Disruption Rifle ESDR-1 'Lockjaw'

aliases

Lockjaw
The Freezer
Cold Joint
Creak

category

energy

manufacturer

ARCTURUS DEFENSE SOLUTIONS

tier availability

Military only

legality

Licensed

base technologies

Focused endothermic projection
Synovial fluid thermodynamic targeting
Biometric joint-cavity mapping

specifications

length: 94 cm
weight: 4.7 kg
power source: ADS EndoCryo-Pack (field-rechargeable)
effective range: 15–180 m
beam duration: Sustained (0.5–3 second variable burst)
joint lock onset: 1.8–2.5 seconds sustained exposure
recovery time target: 12–40 minutes without medical intervention
optics: Integrated biometric targeting overlay with joint-cavity highlighting

tactical use

The ESDR-1 is used predominantly in hostage rescue and high-value capture operations where lethal force is contraindicated. Operators target the knees, elbows, or shoulders of armed subjects to instantly remove their ability to aim or move without requiring lethal engagement. Military units employ it as a 'peel' weapon — stripping a target's mobility before a close-assault team moves in. The integrated biometric overlay highlights joint cavities through light clothing and low-visibility conditions, allowing operators to place shots accurately at distance. At maximum burst duration, the weapon can lock multiple joints on a single target, rendering them fully immobile.

cultural context

In GLMZ's military culture, ESDR-1 operators are sometimes called 'sculptors' — a sardonic nod to the idea that they shape the battlefield by deciding who gets to move and who doesn't. The weapon's presence in an operation is read as a signal that command wants prisoners, not bodies. Among resistance cells and underground operators, encountering Lockjaw fire is deeply feared — not because of lethality, but because capture is considered a worse outcome than death in many of GLMZ's interrogation contexts. There is a black-market trade in stolen ESDR-1 units, particularly among criminal organizations that run their own detention facilities.

known users

Arcturus Defense Solutions special capture units
Military hostage rescue teams
Corporate black-site detention specialists
Black-market acquisition broker 'Meridian Jane'
Paramilitary contractor squad 'The Sculptors'

story hooks

A resistance cell has obtained a stolen ESDR-1 and is using it to capture corporate security personnel for interrogation — the party is hired to find out where the prisoners are being held and what information has been extracted.
An ESDR-1 was used in a high-profile kidnapping of a Zheng-Dao executive, suggesting military or corporate paramilitary involvement — but the serial number traces to a unit officially destroyed three years ago.
A black-market arms dealer is offering ESDR-1 units at a significant markup, and the party discovers the weapons are being sold with a hidden firmware backdoor that allows Arcturus to remotely activate the weapon's biometric overlay as a surveillance device.
A player character is hit by Lockjaw fire during an ambush and must complete a time-sensitive objective with severely limited mobility, knowing capture teams are closing in.

ammunition type

Arcturus High-Density Capacitor Cell ADS-HC9

related entities

Arcturus Defense Solutions
Emeka Johansson-Orozco
GLMZ
Hadiya Akerlund-Mensah-Bonsu
Helix Biosystems
MERIDIAN
Novafold Pharmaceuticals GraftSkin TS-7 Bioprinted Dermal Replacement Sheet
Variable Impedance Rifle VIR-9 'Switchback'
Zheng-dao Bioelectric

physical description

visual profile	A sleek, angular rifle with a distinctly medical aesthetic corrupted into military form. The barrel assembly is oversized and cylindrical, housing the endothermic projection chamber. The stock tapers backward with an ergonomic curve. Overall impression is precision instrumentation weaponized—surgical coldness merged with tactical aggression.
dimensions	940 mm length, 65 mm width at widest (barrel), 120 mm height with scope. Barrel section 380 mm long, noticeably thicker than traditional rifle barrels.
weight description	Surprisingly balanced at 4.7 kg—front-heavy due to the projection chamber but not unwieldy. Feels like controlled precision rather than raw heft; the weight settles into the shoulder naturally.
primary material	Aerospace-grade titanium alloy chassis with carbon-composite furniture. Barrel casing is brushed stainless steel with internal cryo-conductive elements visible through partial translucency.
finish	Matte anodized gunmetal gray on frame, polished surgical steel on barrel. Deliberately clinical appearance; no aggressive styling.
color scheme	Gunmetal gray primary, with accent panels in ice-white and arctic blue. Subtle neon-cyan piping traces the power conduits along the stock.
grip texture	Textured thermoplastic with embedded micro-channels for heat dissipation. Feels cool to the touch, intentionally mimicking the weapon's thermal function. Slightly rubberized for secure purchase even in cold conditions.
distinctive features	Oversized cylindrical barrel with visible thermal-dispersal fins spiraling down the length Integrated biometric targeting scope mounted flush with receiver—display reads joint-cavity data directly onto optic Asymmetrical charge indicators (three small LEDs in ice-blue) running along the left side of the stock Prominent EndoCryo-Pack attachment point on the underside—cylindrical power module slots in like a magazine Exhaust vent grilles near the rear of the barrel, designed to bleed waste thermal energy upward Surgical-grade serial plate etched into the stock: 'ARCTURUS DEFENSE SOLUTIONS \| ESDR-1 LOCKJAW' Crosshair etching on the barrel casing—minimalist, precision-focused design Subtle company cipher (geometric Φ outline) embossed near the grip
manufacturer markings	ARCTURUS DEFENSE SOLUTIONS logo (stylized aurora borealis pattern) stamped in matte on the upper receiver. Serial number and licensing plate etched below the charging handle in small white lettering. 'MEDICAL DERIVATION' stamp near the barrel joint in red—warning/compliance marking.
condition typical	Military examples are immaculately maintained—sterile field finish, no cosmetic wear. Some field units show faint discoloration around exhaust vents from repeated thermal cycling. Scopes may have minor scratches from deployment, but structural integrity remains pristine. Operators treat it like precision medical equipment, not combat rifle.

image prompt

Product photography of the ESDR-1 'Lockjaw' rifle mounted horizontally on a matte black synthetic surface. Dramatic side-lighting from the left reveals the brushed stainless-steel barrel's thermal fins and the faint cyan-blue charge indicators glowing softly. The stock is cradled in a gloved tactical hand wearing reinforced polymer gauntlets. Close detail on the integrated biometric scope showing faint holographic joint-cavity highlights. Background is deep charcoal with subtle bokeh depth. Clinical, surgical precision aesthetic—think medical device crossed with military hardware. Cool color temperature dominated by gunmetal gray and arctic blue accents. Include visible EndoCryo-Pack module in detail. GLMZ military-issue composition. --ar 3:2 --v 6

visual prompt