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

1 / 11

Meridian Munitions Dual-Mode DMR MDDM-7 'Switchback'

The MDDM-7 Switchback is a dual-caliber DMR that chambers both 6.5mm caseless and 8.6mm caseless through a barrel-swap system that the BCI smart-link manages automatically. The weapon carries two barrels internally — one precision 6.5mm tube for long-range accuracy and one heavy 8.6mm tube for close-range stopping power. On neural command, the active barrel rotates into position in 0.8 seconds, reconfiguring the weapon's ballistic profile.

The 6.5mm mode delivers 1-MOA accuracy at 800 meters — competitive with dedicated DMR platforms. The 8.6mm mode sacrifices accuracy for devastating close-range terminal effect, functioning essentially as a semi-automatic battle rifle that hits like a freight train inside 300 meters. The BCI system adjusts the smart-scope's ballistic calculations automatically when the barrel swaps, and the magazine well accepts both caliber-specific magazines.

Meridian designed the Switchback for designated marksmen who operate without close-range backup. In small freelance teams where the marksman might need to defend their position at CQB distances before resuming precision overwatch, the MDDM-7 provides both capabilities without requiring a secondary weapon. At Φ9,500, the dual-barrel system represents a significant engineering investment that Meridian prices competitively.

name

Meridian Munitions Dual-Mode DMR MDDM-7 'Switchback'

aliases

Switchback
MDDM-7
Two-Face

category

dmr

manufacturer

MERIDIAN MUNITIONS

tier availability

Tier 3+

legality

Available — premium licensing

base technologies

Dual-barrel rotation system
BCI automated barrel swap
Multi-caliber ballistic adaptation
Compact dual-barrel housing

specifications

caliber: 6.5mm caseless / 8.6mm caseless (switchable)
effective_range: 800m (6.5mm) / 400m (8.6mm)
rate_of_fire: Semi-automatic
magazine_capacity: 20 rounds (6.5mm) / 12 rounds (8.6mm)
weight: 5.0 kg

tactical use

The Switchback eliminates the DMR's traditional vulnerability to close-range engagement. When hostiles close inside the 6.5mm's optimal range, the operator swaps to 8.6mm and meets the threat with overwhelming close-range firepower. The 0.8-second barrel swap is fast enough for reactive transitions during dynamic engagements. The weapon's versatility allows the marksman to operate independently or in small teams without requiring dedicated close-range support.

cultural context

The Switchback reflects the reality of freelance designated marksmanship — that precision shooters rarely have the luxury of a full squad protecting their position. The weapon acknowledges that the marksman is often alone, and solitude requires versatility. Freelance marksmen have adopted the Switchback enthusiastically, valuing its ability to handle the unpredictable engagement distance variations of independent operations.

known users

Freelance designated marksmen
Solo operators
Small-team marksmen
Versatile precision shooters

story hooks

A Switchback's barrel rotation jammed mid-swap during a critical engagement, leaving the operator with neither barrel in firing position. The 0.8-second swap became an eternity as the operator manually forced the rotation.
A Switchback operator discovered that the dual-barrel housing had been modified to include a third barrel position — empty, but pre-drilled for a caliber that doesn't exist in production. Someone is planning for ammunition that hasn't been invented yet.

ammunition type

6.5mm caseless match
8.6mm caseless

related entities

Alper Holmberg-Dembele
Breck Tannen
Focadrin
MERIDIAN
Nika Svensson-Kone

physical description

visual profile	A sleek, modular DMR with a distinctive dual-chamber housing along the upper receiver. The weapon presents as longer and more angular than conventional marksman rifles, with a pronounced central axis that hints at its internal barrel-rotation mechanism. The profile is purposefully compact despite dual-barrel complexity—designed for operators who can't afford bulk. At rest, it reads as a precision instrument with combat-hardened edges.
dimensions	Overall length: 1,120mm (6.5mm mode) / 1,085mm (8.6mm mode); barrel length: 610mm (6.5mm) / 550mm (8.6mm); receiver width: 85mm (housing both barrel channels); height over bore: 95mm
weight description	Hefty but balanced—5.0kg distributed to favor the shooter's natural point of aim. The dual-barrel housing creates a counterweight that doesn't feel unwieldy despite the mechanical complexity. Settles into prone position with deliberate stability; feels engineered rather than improvised.
primary material	Aerospace-grade carbon composite receiver with internal steel barrel channels. Titanium alloy breech housing and rotation mechanism. Polymer furniture with embedded aramid reinforcement. Smart-scope mounting is precision-milled aluminum.
finish	Matte gunmetal gray with satin-black accents on the dual-barrel housing. The internal barrel channels are visible through strategic cutouts—brushed steel showing beneath composite shell. Wear reveals lighter composite substrate underneath. Meridian engravings are gunmetal inlays that catch light subtly.
color scheme	Primary: gunmetal gray with near-black composite. Accents: brushed steel (barrel housing), anodized blue (safety lever and magazine well), faint crimson indicator line along the active-barrel position marker.
grip texture	Textured polymer with embedded cooling channels—feels slightly cold to bare skin, intentionally so for heat dissipation during sustained fire. Stippled for purchase even in damp conditions. Magazine well is hard-anodized aluminum with a tactile click-groove for indexing.
distinctive features	Rotating dual-barrel housing with mechanical indicator window showing active caliber (6.5mm red / 8.6mm blue) BCI neural-link port (small circular recess behind charging handle with blue indicator LED) Ballistic computer display (small e-ink screen integrated into smart-scope rail showing range, wind, and active caliber) Integrated heat-bleed vents along the barrel housing in a radial pattern Dual magazine ports (offset slightly to prevent cross-loading) Mechanical barrel-swap indicator—a rotating ring that shows 6.5 or 8.6 to the operator Factory test-fire micro-engravings along the upper receiver flats Quick-detach bipod sockets (integrated into foregrip area) Meridian holographic nameplate showing MDDM-7 and serial batch
manufacturer markings	Meridian Munitions logo (stylized 'M' with twin vertical bars suggesting dual barrels) inlaid in gunmetal on the left side of receiver. 'MDDM-7 SWITCHBACK' stamped below. Small Φ9,500 price marking etched discreetly on the lower receiver. Serial number and batch code laser-marked on the breech block.
condition typical	Factory-new examples show razor-sharp edges and pristine composite. Field-worn Switchbacks bear scuff marks on the barrel housing from mag transitions and gear contact. Operational examples show carbon buildup around the barrel-swap mechanism and micro-scratches on the smart-scope display from rapid target acquisition. Well-maintained variants retain their matte finish; heavily deployed versions show worn high-spots on the grip and receiver rails.

image prompt

Product photography of the Meridian Munitions MDDM-7 Switchback DMR positioned at a 45-degree angle on a brushed-steel surface. The weapon's dual-barrel housing is prominent and clearly visible, showing the mechanical rotating channels beneath semi-transparent composite. Dramatic side-lighting from the left creates sharp shadows that emphasize the contours of the barrel-swap mechanism and reveals the brushed-steel interior through cutouts. The smart-scope's e-ink display shows faint blue text. A gloved hand (black tactical glove, fingers extended) grips the stock, showing the textured polymer and cooling-channel detail. The background is deep charcoal with neon-blue accent lighting hitting the BCI neural-link port. Meridian Munitions engravings catch light subtly. The image conveys precision engineering meets neo-noir lethality—clean, modular, purposeful. Neo-noir urban aesthetic, product photography, professional catalog style. --ar 3:2 --v 6

visual prompt