LVA2™ Rail System

For SIG MCX Rattler 5.5 Platform

Next-Generation Titanium Rail Architecture — Purpose-Built for the MCX

The LVA2™ is the evolution of our ISR rail platform — engineered specifically for the SIG MCX 5.5” Rattler and optimized for extreme rigidity, thermal mitigation, and hard-use operational environments.

Manufactured entirely from DMLS 3D-printed Ti-6Al-4V Grade 5 titanium, the LVA2 delivers strength and heat transfer properties that aluminum rail systems simply cannot match.

This is not another handguard.
This is a structural upgrade to your MCX.

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Core Architecture

• Full Aerospace DMLS Titanium Construction

• Receiver Index Tabs to eliminate counter-rotation and forward shift

• Reverse Index Laser Tab — first-to-market solution to preserve laser zero

• Full Tang Lock-Up System for rock-solid retention

• Maritime Hex Surface Pattern for heat dissipation & grip

• Nano Shield™ Thermal Dissipation Coating

• Integrated QD mounting points

• Ultra-lightweight for its class

• Designed for suppressor-optimized configurations

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Available Configurations

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5” LVA2 – SHORT

Ultra-Compact. Maximum Control.

Purpose-built for the 5.5” Rattler configuration, the 5” LVA2 Short maintains the platform’s compact footprint while dramatically increasing rigidity and thermal management.

Ideal for:

• PDW builds

• Close-quarters deployment

• Vehicle operations

• Suppressed micro-setups

Weight: ~0.58 lbs
Optimized For: Flush suppressor fitment
Accessory Interface: M-LOK compatible

Compact does not mean compromised.

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8.5” LVA2 – MEDIUM

Extended Control. Balanced Profile.

The 8.5” variant provides increased forward grip surface and enhanced laser stability while maintaining suppressor clearance for advanced setups.

Ideal for:

• Professional end-users

• Duty rifles

• Precision-focused Rattler builds

Weight: Optimized titanium profile
Accessory Interface: Full M-LOK compatibility
Enhanced Heat Mitigation: Increased surface area mesh geometry

The 8.5” delivers a refined balance between compact aggression and extended capability.

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9” LVA2 – MARITIME (with Diving Board)

Mission Extended. Thermal Dominance.

The 9” Maritime variant incorporates our integrated titanium “Diving Board” extension for advanced laser bridging and optical alignment across suppressed systems.

Designed for:

• IR laser bridging

• Night operations

• Suppressor shrouded configurations

• Extreme environmental exposure (saltwater / maritime)

Features Include:

• Integrated titanium diving board

• Extended top rail continuity

• Superior thermal dispersion geometry

• Reinforced forward cantilever support

This configuration is engineered for professional night-fighting platforms where zero retention is non-negotiable.

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Why Titanium?

Compared to aluminum:

• Significantly higher rigidity

• Superior heat resistance

• Improved laser zero retention under sustained fire

• Greater durability in austere and maritime environments

The LVA2 is printed, not machined — allowing geometry and internal reinforcement impossible in traditional rail systems.