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Matrix Custom Viper Gas Blowback M4 Airsoft Rifle by S&T
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Price range: $10.00 through $15.00
Current Product Price
$350.00
The Matrix Custom Viper GBBR by S&T features a WA-style gas blowback system, lightweight polymer receiver, modular VIPER handguard, and adjustable hop-up.
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MATRIX CUSTOM VIPER GAS BLOWBACK M4
BY S&T / BLACK
WESTERN ARMS GBB SYSTEM • LIGHTWEIGHT POLYMER RECEIVER • VIPER MODULAR HANDGUARD • LOW-PROFILE STOCK
MATRIX CUSTOM // S&T // VIPER M4 // GAS BLOWBACK // WESTERN ARMS SYSTEM // MODULAR HANDGUARD // BLACK
Get the mechanical experience of a gas blowback M4 in a lightweight, distinctive package with the Matrix Custom Viper Gas Blowback M4 Airsoft Rifle by S&T – Black.
Built around the established Western Arms-style gas blowback system, the Matrix Custom Viper combines realistic gas-powered operation with a lightweight injection-molded polymer receiver, improved gas efficiency, reliable feeding, and a modern exterior inspired by Strike Industries VIPER styling.
The platform is immediately recognizable thanks to its VIPER modular handguard and low-profile stock, while a removable carry handle provides classic M4 styling with a 20mm accessory rail underneath for compatible optics.
For players searching for a Matrix gas blowback M4, S&T GBB rifle, Western Arms system airsoft rifle, or lightweight M4 gas blowback platform, the Custom Viper offers a unique combination of proven architecture, modern styling, and reduced external weight.
VIPER
A DIFFERENT TAKE ON THE GAS BLOWBACK M4
The Matrix Custom Viper isn’t designed to look like another basic M4.
Its exterior combines familiar M4 architecture with distinctive VIPER-style components, creating a platform that bridges classic and modern design.
At the front, the modular handguard gives the rifle a streamlined profile while providing a foundation for appropriately compatible accessories.
At the rear, a low-profile stock continues the lightweight, compact visual theme.
The result is a gas blowback rifle with a recognizable M4 foundation but enough external changes to give the Viper its own identity.
WESTERN ARMS
ESTABLISHED GAS BLOWBACK ARCHITECTURE
At the heart of the Matrix Custom Viper is its:
WESTERN ARMS GAS BLOWBACK SYSTEM
The Western Arms-style system is a long-established gas blowback architecture with a substantial ecosystem of aftermarket components and accessories.
For owners interested in maintaining or customizing their platform over time, this established system provides an important advantage compared with more proprietary designs.
Compatibility can vary between individual manufacturers, generations, and aftermarket components, so specific parts should always be verified before purchase.
More importantly, the system gives the Viper the mechanical operation expected from a gas blowback M4 airsoft rifle, providing cycling movement as the rifle operates.
GAS BLOWBACK
MECHANICAL OPERATION. RESPONSIVE EXPERIENCE.
Unlike an electric AEG, the Matrix Viper operates through a gas blowback system.
Gas powers the firing cycle while also producing the characteristic mechanical movement associated with a GBB platform.
S&T’s configuration is designed around improved gas efficiency, reliable feeding, and dependable operation during full-auto cycling under appropriate conditions.
As with all gas blowback airsoft platforms, actual performance can vary with gas type, temperature, magazine condition, maintenance, and other environmental factors.
That mechanical nature is also part of the appeal.
For players who prefer an airsoft rifle where the operating system itself contributes to the overall experience, a GBB M4 provides a distinctly different feel from a conventional electric platform.
LIGHTWEIGHT
POLYMER WITHOUT THE BULK
Instead of using a heavy metal receiver set, S&T equips the Matrix Custom Viper with an:
INJECTION-MOLDED POLYMER RECEIVER
The polymer construction provides rugged external durability while helping reduce the additional weight associated with a full-metal receiver.
That lighter foundation works particularly well with the Viper’s modern external configuration.
Rather than concentrating unnecessary weight through the center of the rifle, the polymer receiver, modular front end, and low-profile stock create a more manageable overall package.
For players who like the operating characteristics of a gas blowback M4 but don’t necessarily want the weight of a full-metal build, this is one of the Viper’s defining features.
VIPER MODULAR
MODERN FRONT-END DESIGN
The Strike Industries VIPER-inspired modular handguard gives the rifle its distinctive front-end profile.
Its streamlined design complements the polymer receiver while creating a more contemporary appearance than a traditional M4 handguard.
The low-profile stock at the rear follows the same design philosophy, creating a cohesive external package from front to back.
Together, these components make the Matrix Viper instantly recognizable while maintaining the underlying familiarity of an M4-style airsoft platform.
CARRY HANDLE
CLASSIC LOOK. MODERN OPTION.
The Matrix Custom Viper also includes a:
REMOVABLE CARRY HANDLE
With the carry handle installed, the rifle maintains a more traditional M4-style upper profile.
Remove it and you’ll find a 20mm accessory rail underneath, providing a mounting surface for appropriately compatible optics.
This gives the owner two very different visual directions without requiring a different upper receiver.
Run the carry handle for the classic appearance or remove it for a cleaner optics-ready configuration.
PERFORMANCE ARCHITECTURE
GAS SYSTEM + LIGHTWEIGHT CHASSIS + MODULAR EXTERIOR
The Matrix Viper combines established gas blowback architecture with a lightweight custom exterior.
WA // THE OPERATING SYSTEM
The rifle is built around a Western Arms-style GBB platform.
System: Western Arms-Style Gas Blowback
Operation: Gas Powered
Fire Capability: Semi / Full Auto
Aftermarket: Broad WA-Style Ecosystem
POLYMER // THE FOUNDATION
Weight is controlled through the receiver design.
Receiver: Injection-Molded Polymer
Purpose: Durable, Lightweight Construction
Color: Black
VIPER // THE EXTERIOR
Distinctive components define the Custom Viper.
Handguard: VIPER Modular Style
Stock: Low Profile
Platform: M4-Style GBB
OPTICS // THE INTERFACE
The removable carry handle provides configuration flexibility.
Carry Handle: Removable
Accessory Rail: 20mm
Optics Ready: Yes, with Appropriate Compatible Mounting
THE MATRIX VIPER FORMULA
WESTERN ARMS GBB SYSTEM
Established gas blowback architecture with extensive aftermarket support.
IMPROVED GAS EFFICIENCY
Designed around reliable gas-powered cycling and feeding.
POLYMER RECEIVER
Reduces unnecessary external weight compared with a full-metal receiver.
VIPER MODULAR HANDGUARD
Creates the distinctive modern front end of the rifle.
LOW-PROFILE STOCK
Completes the streamlined Viper configuration.
REMOVABLE CARRY HANDLE
Allows the upper configuration to move between classic and optics-ready styling.
20MM ACCESSORY RAIL
Provides a standardized mounting surface underneath the removable carry handle.
GAS BLOWBACK // IMPORTANT INFORMATION
Gas blowback airsoft rifles are mechanically different from AEGs and require appropriate maintenance and compatible consumables.
Performance and gas efficiency can vary significantly with ambient temperature, magazine temperature, gas type, seals, lubrication, maintenance, and the condition of the rifle.
Use only manufacturer-recommended gas and maintenance products. Always verify aftermarket compatibility before installing replacement or upgrade components.
MATRIX CUSTOM VIPER
LIGHTWEIGHT BUILD. PROVEN GBB FOUNDATION.
The Matrix Custom Viper Gas Blowback M4 Airsoft Rifle by S&T – Black combines established Western Arms-style gas blowback architecture with a lightweight and distinctive custom M4 exterior.
Its WA-style gas blowback system, injection-molded polymer receiver, improved gas efficiency, reliable feeding, full-auto capability, VIPER modular handguard, low-profile stock, removable carry handle, and 20mm optics rail create a platform designed for players who want the mechanical experience of a GBB rifle without automatically stepping into a heavy full-metal configuration.
For customers searching for a Matrix Custom Viper GBB, S&T gas blowback M4, Western Arms M4 airsoft rifle, lightweight polymer GBB M4, Matrix Viper airsoft rifle, or Matrix gas blowback rifle Canada, the Viper provides an interesting combination of established internal architecture, reduced external weight, and unmistakable custom styling.
MATRIX CUSTOM / VIPER / S&T / WESTERN ARMS SYSTEM / GAS BLOWBACK / MODULAR M4 / BLACK
| Weight | 3.3 kg |
|---|---|
| Dimensions | 48 × 12 × 9 in |
| Product Specifications | Length: 765mm-855mm, Adjustable |
FAQ
◉ MATRIX CUSTOM VIPER // FAQ DATABASE ◉
THE IMPORTANT QUESTIONS, ANSWERED.
Matrix Custom gas blowback airsoft rifle manufactured by S&T, combining a Western Arms-style GBB architecture with a lightweight injection-molded polymer receiver, VIPER modular handguard, low-profile stock, removable carry handle, and integrated 20mm optic mounting rail.
MATRIX CUSTOM // S&T
Who manufactures the Matrix Custom Viper?
The rifle is a
Matrix Custom model manufactured by S&T.
GBB // GAS BLOWBACK
Is the Matrix Viper an AEG?
No.
The Matrix Viper is a
gas blowback airsoft rifle,
rather than an electrically powered AEG.
WA-STYLE // GBB ARCHITECTURE
Which gas blowback system does it use?
The Matrix Custom Viper utilizes the
Western Arms-style gas blowback system.
WA PLATFORM // AFTERMARKET
Why is the Western Arms system important?
The WA-style platform has been available for many years and has developed a
broad aftermarket ecosystem.
Exact component compatibility should still be verified because specifications can vary between manufacturers and production versions.
MECHANICAL CYCLING // BLOWBACK
Does the rifle have blowback?
Yes.
Its gas operating system provides
mechanical cycling during operation.
POLYMER // LIGHTWEIGHT RECEIVER
Is the receiver metal?
No.
The Viper uses a
durable injection-molded polymer receiver
designed to reduce weight compared with a full-metal receiver.
VIPER // MODULAR HANDGUARD
Is the handguard modular?
Yes.
The rifle features a
VIPER modular handguard.
LOW-PROFILE // VIPER STOCK
What stock does it use?
The Viper comes with a distinctive
low-profile stock
that complements the rifle’s streamlined external design.
REMOVABLE // CARRY HANDLE
Is the carry handle removable?
Yes.
The carry handle can be removed from the rifle.
20MM RAIL // OPTICS READY
Can I mount an optic?
A
20mm accessory rail is located underneath the removable carry handle,
providing a mounting surface for appropriately compatible airsoft optics.
SELECT-FIRE // FULL-AUTO
Does it support full-auto operation?
The supplied specifications describe the Viper as capable of reliable feeding and firing during
full-auto operation
under appropriate conditions. Always follow local field rules and permitted firing-mode requirements.
LIGHTWEIGHT // POLYMER DESIGN
Is the Viper lightweight?
The
injection-molded polymer receiver helps reduce overall weight
compared with an equivalent full-metal receiver configuration.
⚠ AFTERMARKET // VERIFY COMPATIBILITY
Are aftermarket upgrades available?
The Western Arms-style architecture has a substantial aftermarket ecosystem, but
individual component compatibility should always be confirmed
for the specific S&T / Matrix configuration before ordering.
MATRIX // S&T // WA-STYLE GBB // VIPER
What makes the Matrix Custom Viper stand out?
The Matrix Custom Viper combines a
Western Arms-style gas blowback architecture, lightweight injection-molded polymer receiver, VIPER modular handguard, distinctive low-profile stock, removable carry handle, concealed 20mm optic rail, mechanical blowback cycling, and an established aftermarket platform.
It offers a distinctive lightweight GBB configuration for players looking for something different from a conventional M4-style airsoft rifle.
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CQC Support Database
Product Questions
Important information about ordering, processing, shipping and product compatibility.
Yes. Eligible products can be shipped across Canada.
Shipping methods and rates are displayed during checkout.
Standard processing is normally approximately 3–4 business days.
Weekends and statutory holidays are not processing days.
Some products require a transfer from our USA warehouse.
These orders may require additional processing time.
Yes. Contact our team before ordering for compatibility assistance
with rifles, pistols, engines, gearboxes and accessories.
Tracking is normally supplied after processing,
packaging and carrier acceptance.
Selected airsoft rifles and pistols may qualify.
Eligibility depends on platform, condition and current demand.
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