M-50SN Gravehand
M-50SN “Gravehand”
Black-market snare-mine net grenade
Common street names
Gravehand
Kneecapper
Choir Wire
Overview
The M-50SN is a modified derivative of the standard M-50 monomolecular net grenade. Instead of expanding into a free-floating 1.5 meter square slicing field, the SN variant deploys as a ground-anchored, semi-buried snare lattice designed to immobilize, maim, or capture targets moving through confined terrain. It is marketed as a “denial and retrieval tool,” though in practice it is used for ambushes, kidnappings, and brutal area traps.
Unlike the wide-bloom or adaptive net variants, the Gravehand is not optimized for dicing. It is optimized for entanglement, tendon severing, and structural crippling.
Manufacturer
Originally reverse-engineered from expired Mars patents by a Titan-based salvage syndicate known as Helix Dockworks. Current production cells are believed to operate in:
• Abandoned regolith tunnels under Cydonia
• Sub-basements in the Eight Terrace District
• A drifting fabrication barge in Saturn orbit
No single entity claims authorship. Most units are assembled from surplus M-50 cores and custom-machined micro-spools.
Physical Description
Designation: M-50SN
Caliber: 50 mm caseless smart-fused canister
Length: 190 mm
Diameter: 50 mm
Weight: 1.6 kg
Exterior features:
• Matte black poly-ceramic casing
• Dull gray anchor ring at base
• Yellow diagonal hash marks indicating entanglement hazard
• No official markings
• Encrypted handshake port concealed beneath a snap-off polymer cap
Deployment Mechanism
The Gravehand is designed for ground impact, not airburst.
Upon impact:
- A shaped micro-charge drives four tungsten-carbide anchor spikes into the surface in a 1.8 meter square pattern.
- A compressed micro-spool releases monomolecular filament lines in a radial pattern.
- Secondary tension lines retract slightly, lifting the net 5 to 20 cm off the ground.
The result is a low-profile trip-and-snare field that is nearly invisible in low light.
Wire spacing:
• 40 mm vertical spacing
• 60 mm horizontal spacing
• Reinforced tendon-level strands at 10 cm height
Effective coverage: approximately 1.8 m x 1.8 m
Operational Modes
Impact Snare
Immediate deployment upon ground strike.
Proximity Trigger
Deploys when a target passes within 0.5 to 2 meters.
Timed Delay
Delay of up to 30 minutes before activation. Used for ambushes.
Remote Arming
Encrypted activation via short-range comm burst. Often used by security teams and criminal crews.
Effects on Target
Infantry:
• Deep lacerations at shin, calf, and thigh level
• Severed Achilles tendons common
• Immediate collapse and entanglement
• Severe bleeding
Light drones:
• Rotor entanglement
• Motor burnout
• Structural slicing at lower frame
Powered armor:
• Will not fully defeat heavy armor
• Can sever exposed joints, cabling, hydraulic lines
The net is not designed to cube targets like the corridor-optimized variant. Instead, it binds and shreds selectively, preserving mass while disabling mobility.
Duration
Active field life: 3 to 8 minutes depending on tension setting
Self-disintegrates after programmed interval, leaving only anchor fragments
If improperly configured, wires may remain taut and lethal until manually cut.
Range
Effective launch range: 50 to 75 meters
Short range is due to anchor spike mass and spool power requirements.
Cost
Black market unit price:
Basic proximity variant: 18,000 to 26,000 credits
Encrypted remote variant: 32,000 to 48,000 credits
Custom tuned capture model: 60,000+ credits
Often sold singly. Rarely issued more than one per grenadier due to cost.
Known Users
• Urban abduction crews
• Corporate snatch teams
• Anti-drone insurgent cells
• Certain Mars auxiliary security contractors
Rumored but unconfirmed use by Red Dragons Tong enforcement teams for perimeter control.
Legal Status
Explicitly banned for anti-personnel use under interstellar Law of Armed Conflict "LOAC" conventions.
Officially classified as a drone interdiction device.
Possession outside licensed military contracts is a felony on Mars and Titan. Quasi-legal on Chendiuria but restricted in commercial districts.
Operational Drawbacks
• Requires relatively flat surface for optimal deployment
• Ineffective on loose regolith without anchor upgrade
• Visible in strong UV
• Vulnerable to high-powered directed energy sweep
Field Reputation
Infantry call it Gravehand because it “grabs your ankles and pulls you down.”
Veteran operators treat it with caution. Even well-trained teams have suffered friendly casualties during night maneuvers.
In narrow alleys, corridors, stairwells, and docking ramps, the M-50SN turns a simple passage into a blood-slicked choke point.
M-50SN Grenade
Exceptionally rare.
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