Street Custom 'Cigarette' Pen Gun

improvised firearm

Arcturus Defense Solutions Crowd Control SMG ACSM-3 'Shepherd'

smg

Tessera Neural Assault System TNAS-1 'Puppeteer'

assault_rifle

Ablative Charge Disruption Rifle ACDR-2 'Sandpaper'

cyber

Acoustic Cavity Resonance Pistol ACRP-2 'Hollowpoint'

exotic

Acoustic Marrow Shear Rifle AMSR-6 'Tutor'

exotic

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

explosive

Arcturus Defense Solutions Cryogenic Projector CP-4 'Frostbite'

energy

Arcturus Defense Solutions Directed EMP Rifle DER-5 'Blackout'

electromagnetic

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

heavy

Arcturus Defense Solutions Kinetic Denial System KDS-4 'Bouncer'

heavy

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

rifle

Arcturus Defense Solutions Pulse Carbine PC-6 'Heartbeat'

electromagnetic

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

heavy

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

energy

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'

drone

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'

cyber

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'

energy

Carrion Defense Works Fragmentation Sleeve FS-2 'Shrapnel Hug'

explosive

Carrion Defense Works Entropic Shotgun ES-4 'Ragnarok'

shotgun

Carrion Defense Works Hemorrhage Rifle HR-6 'Bloodletter'

rifle

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

exotic

Carrion Defense Works Miasma Projector MP-5 'Plague Bearer'

chemical

Carrion Defense Works Marrow Drill MD-7 'Dentist'

pistol

Carrion Defense Works Necrotizing Agent Sprayer NAS-2 'Rot'

chemical

Carrion Defense Works Ricochet Pistol RCH-1 'Billiard'

pistol

Carrion Defense Works Neural Lash NL-3 'Agony'

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

explosive

Cavitation Pulse Carbine CPC-2 'Bends'

firearm

Catalytic Interstitial Desiccation Drone CIDD-3 'Husk'

drone

Catalytic Spore Dispersal Drone CSDD-3 'Mulch'

drone

Cavitation Pulse Knuckles CPK-5 'Bloodwater'

melee

Cerulean Phosphene Projector CPP-3 'Phantom Light'

exotic

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'

exotic

Cortical Bleed Emitter CBE-4 'Lacuna'

cyber

Counter-Personnel Loiter Munition CPLM-7 'Patience'

drone

Crystalline Synovial Pressure Rifle CSPR-2 'Kneemaker'

exotic

Cryogenic Fracture Disbursement Mine CFDM-4

explosive

Dermal Induction Flayer DIF-2 'Saltwater'

exotic

Cryogenic Pressure Emitter CPE-2 'Frostbite'

energy

Dielectric Filament Anchor Drone DFAD-1 'Cobweb'

drone

Dielectric Hemorrhage Emitter DHE-4 'Blister'

energy

Dielectric Phase Inversion Glove DPIG-4 'Secondskin'

exotic

Dielectric Vitreous Humor Agitator DVHA-2 'Snowglobe'

exotic

Electrochemical Dissolution Sprayer EDS-2 'Lacquer'

exotic

Directed Overpressure Charge

explosive

Directed Oxidation Lance DOL-3 'Rustmaker'

cyber

Electrokinetic Pulse Drone EPD-3 'Thunderhead'

drone

Electrochemical Vapor Seeding Drone EVSD-4 'Rainmaker'

drone

Electrolytic Bone Density Projector EBDP-4 'Chalk'

energy

Electrostatic Adipose Polarization Drone EAPD-2 'Render'

drone

Electromagnetic Overpressure Charge EOC-8

explosive

Electrostatic Dermal Adhesion Projector

exotic

Electromagnetic Pulse Grenade EPG-5 'Deadstop'

explosive

Electrothermal Chemical Carbine ETCC-5 'Flashpoint'

firearm

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'

drone

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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Meridian Munitions Viper PDW MVP-3 'Sidewinder'

The MVP-3 Sidewinder is Meridian Munitions' compact personal defense weapon, designed for operators who need maximum firepower in minimum space. The weapon uses a telescoping bolt design that wraps around the barrel, reducing overall length to 280mm with the stock folded while maintaining a 180mm barrel for adequate velocity. Chambered in 5.7mm caseless armor-piercing, the Sidewinder punches above its weight class against body armor.

The BCI aim-assist module is the same open-architecture system used in the MM-4 Breadwinner, maintaining Meridian's commitment to non-proprietary accessories. A rail-mounted micro red dot is included as standard, and the weapon accepts any manufacturer's suppressor on its threaded barrel. The 25-round magazine fits flush with the grip, maintaining the compact profile.

At Φ2,200, the Sidewinder occupies the mid-range of the PDW market. It lacks the BCI sophistication of Tessera's Reflex and the rock-bottom pricing of Kang-Petrov's Rattler, but it delivers reliable performance with armor-piercing capability in a package that fits inside a laptop bag. For the freelancer who needs a concealable weapon that can defeat body armor, the MVP-3 is the practical choice.

name

Meridian Munitions Viper PDW MVP-3 'Sidewinder'

aliases

Sidewinder
MVP-3
Viper

category

smg

manufacturer

MERIDIAN MUNITIONS

tier availability

Tier 2+

legality

Available — standard licensing

base technologies

Telescoping bolt design
Open-architecture BCI module
Armor-piercing optimized feed

specifications

caliber: 5.7mm caseless AP
effective_range: 150m
rate_of_fire: 850 rpm (cyclic)
magazine_capacity: 25 rounds
weight: 1.6 kg

tactical use

The Sidewinder provides armor-piercing capability in a concealable package. Its 5.7mm AP round defeats Level II body armor at close range and degrades Level III protection, giving operators a response to armored threats that pistol-caliber weapons cannot address. The compact dimensions allow concealed carry in civilian environments where a visible weapon would compromise the operation. The open-architecture BCI module means operators already using Meridian's ecosystem can transfer their settings directly.

cultural context

The Sidewinder is the freelancer's insurance policy — the weapon carried when the job description says 'no weapons expected' but experience says otherwise. Its popularity among couriers, negotiators, and fixers reflects the reality that GLMZ's professional class moves through danger zones as part of their daily routine. The MVP-3 doesn't start fights. It finishes the ones that find you.

known users

Freelance operators
Corporate couriers
Negotiators and fixers
Personal defense carriers

story hooks

A courier's Sidewinder was the only weapon available when their convoy was ambushed. The 25-round magazine held off attackers long enough for extraction — barely.
Meridian is developing an upgraded Sidewinder with a 40-round extended magazine, but the prototype was stolen from their R&D facility along with the production blueprints.

ammunition type

5.7mm caseless AP
5.7mm caseless standard

related entities

GLMZ
MERIDIAN
Meridian Munitions MM-4 'Breadwinner'
Neuromorphic Pressure Cestus
Nika Svensson-Kone
Periosteal Resonance Targeting Drone PRTD-5 'Knuckle'
Ringo DV-4 'Courier'
SynapTech GripTrue Palmar Adhesion Implant
Tessera Corponation
The Compact
Vantablack FH-20 'Convoy'
Vespid Dynamics Pheromone Marker Gun PMG-1 'Breadwinner'

physical description

visual profile	A compact, angular submachine gun with an aggressive wedge-shaped profile. The telescoping bolt wrapped around the barrel creates a distinctive bulge along the top receiver. The folded stock configuration makes it appear almost as wide as it is long—a dense, efficient package rather than a traditional elongated PDW silhouette.
dimensions	280mm overall length (stock folded), 380mm extended; 180mm barrel; 65mm width at receiver; 130mm height with rail-mounted optic
weight description	Balanced and surprisingly handy at 1.6kg—light enough for one-handed tactical transitions but substantial enough to manage 850 rpm recoil. The weight distribution favors the hand due to the compact barrel, making it feel controllable rather than whippy.
primary material	Reinforced polymer composite frame with steel receiver barrel and internal bolt assembly. The polymer is industrial-grade to handle sustained fire without flex.
finish	Matte black polymer with brushed steel receiver showing micro-serration marks from precision machining. The barrel wears a dark gray DLC (diamond-like carbon) coating for corrosion resistance.
color scheme	Primary matte black with brushed steel accents on the receiver and bolt cover. Rail system in dark gunmetal gray. Accent striping in corporate steel blue along the mag well.
grip texture	Aggressively textured rubberized polymer with vertical grip ridges. The pistol grip wraps slightly forward—designed for off-hand stabilization in confined spaces. Magazine well features thumb-rest indexing.
distinctive features	Telescoping bolt housing creating pronounced upper receiver bulge Integrated rail-mounted Tier 2 micro red dot (factory standard) Flush-fit 25-round magazine with witness holes Threaded barrel with suppressor-ready crown BCI module interface panel on left receiver side—exposed connector port Ambidextrous fire selector with detent positions clearly marked Heat vent slots running along the upper polymer shroud Charging handle integrated into the bolt telescope—recessed flush when forward
manufacturer markings	MERIDIAN MUNITIONS logo stamped in brushed relief on the left receiver. Serial plate mounted on the magwell with small Φ symbol indicating currency tier. MVP-3 designation lasered on the dust cover. Made in GLMZ barcode on the grip tang.
condition typical	Field-ready and well-maintained. Light operational wear on grip texture from gloved handling, minor scope shadow on the receiver from optic mounting. No battle scars—the Sidewinder is a working tool kept in combat-ready condition by professionals.

image prompt

Product photography of the Meridian Munitions Viper PDW MVP-3 Sidewinder, tactical submachine gun, angled three-quarter view from above. The weapon rests on a dark matte gunmetal surface with dramatic side-lighting casting sharp shadows across the telescoping bolt housing. Close-up detail on the flush magazine, textured grip, and rail-mounted micro red dot optic. Steel and polymer materials rendered with photorealistic finish—matte black contrasting with brushed steel receiver. Neo-noir urban aesthetic with subtle neon blue accent lighting reflecting off the receiver. BCI module interface visible on the left side. Corporate and professional presentation. Shot in 35mm equivalent focal length, shallow depth of field isolating the weapon. --ar 3:2 --v 6

visual prompt