CUSTOM KWA VM4-A1 V2.5

M4 RIS CARBINE AIRSOFT AEG RIFLE // VARIABLE PERFORMANCE SYSTEM

VPS • 390–440 FPS RANGE • V2.5 GEARBOX • FULL METAL • ROTARY HOP-UP • MAGAZINE CUT-OFF • PTS GRIP

KWA VM4-A1 V2.5 // CUSTOM M4 AEG // VARIABLE PERFORMANCE SYSTEM // FULL METAL KWA AEG // VPS AIRSOFT RIFLE // M4 RIS CARBINE

VM4-A1 // PERFORMANCE YOU CAN ADJUST.

The Custom KWA VM4-A1 V2.5 / M4 RIS Carbine Airsoft AEG Rifle takes the familiar M4 carbine platform and builds it around one of KWA’s most distinctive AEG technologies:

VARIABLE PERFORMANCE SYSTEM // VPS.

Rather than locking the rifle into a single factory output configuration, the VPS system provides an adjustable manufacturer-listed range of approximately:

390–440 FPS.

That adjustability is combined with KWA’s V2.5 custom gearbox, upgraded high-speed gear set, improved high-torque motor, Switch Life Extender, rotary hop-up, full-metal receiver architecture, PTS Enhanced Polymer Grip, and 30/120-round magazine cut-off compatibility.

The result is a feature-rich KWA M4 AEG built around adjustability, solid construction and a refined electric powertrain.

VPS

VARIABLE PERFORMANCE SYSTEM.

The defining feature of the VM4-A1 is KWA’s:

VARIABLE PERFORMANCE SYSTEM.

VPS allows the rifle’s spring tension/output configuration to be adjusted through the stock area using the supplied KWA VPS adjustment tool.

The manufacturer-listed adjustment window is approximately:

390 FPS → 440 FPS.

This gives the platform a broader range of factory-designed adjustability than a conventional fixed-output AEG.

Actual chronograph readings can vary with BB weight, spring condition, hop-up setting, air seal, internal condition and chronograph methodology, so the published range should be treated as a manufacturer specification rather than a guaranteed result for every individual rifle.

V2.5

KWA’S CUSTOM GEARBOX ARCHITECTURE.

At the centre of the VM4-A1 is its:

V2.5 CUSTOM GEARBOX.

KWA pairs the gearbox with an:

UPGRADED HIGH-SPEED GEAR SET

and an:

IMPROVED HIGH-TORQUE MOTOR.

The supplied platform information also identifies reinforced metal gearbox construction, precision metal gearing and KWA’s 9mm bearing/bushing architecture.

Rather than focusing on a single upgraded component, the V2.5 system is built as a complete electric drivetrain.

SWITCH LIFE EXTENDER

PROTECTING A CRITICAL ELECTRICAL COMPONENT.

KWA also integrates a:

SWITCH LIFE EXTENDER // SLE.

The purpose of the SLE is to help reduce electrical wear on the rifle’s trigger contacts.

Traditional mechanical AEG contacts can experience electrical arcing and gradual deterioration through repeated operation.

KWA’s integrated system is designed to reduce that stress and extend the usable service life of the switching components.

It’s a feature you may never see from the outside—but one that matters inside an electric rifle.

FULL METAL

M4 CARBINE ARCHITECTURE.

The VM4-A1 surrounds its internal system with a substantial metal exterior.

Construction includes a:

ONE-PIECE FULL-METAL UPPER RECEIVER

paired with a:

METAL LOWER RECEIVER

METAL BARREL ASSEMBLY

and:

METAL BUFFER TUBE.

Together, these components give the VM4-A1 the solid construction expected from KWA’s performance-oriented M4 AEG line.

RIS CARBINE

CLASSIC M4 CONFIGURATION.

This custom VM4-A1 uses the familiar:

M4 RIS CARBINE FORMAT.

The rail-equipped front end gives the rifle the recognizable appearance of a classic M4-style AEG while maintaining compatibility with appropriately sized airsoft accessories.

Rather than completely redesigning the M4 exterior, KWA concentrates much of the VM4-A1’s technology where it matters most:

INSIDE.

That makes this an interesting option for players who like traditional M4 styling but want a more sophisticated internal platform.

ROTARY HOP-UP

SIMPLE, REPEATABLE ADJUSTMENT.

The VM4-A1 is equipped with a:

ROTARY-STYLE HOP-UP.

Rotary hop-up systems use a dial-style adjustment architecture rather than the older sliding lever found in many traditional M4 AEGs.

The system allows hop pressure to be configured for the BB weight and conditions being used.

BB quality, weight, hop-up condition, barrel cleanliness and air seal all contribute to actual consistency, so proper setup matters just as much as the hop-up design itself.

PTS

ENHANCED POLYMER GRIP.

KWA finishes the lower configuration with a:

PTS ENHANCED POLYMER GRIP.

The PTS grip gives the VM4-A1 a more refined interface than a basic M4 motor grip while maintaining durable polymer construction.

It’s a smaller component than the VPS or gearbox, but it’s another indication that the VM4-A1 wasn’t designed as a bare-bones entry-level M4.

30 / 120

MAGAZINE CUT-OFF COMPATIBILITY.

Another distinctive feature is KWA’s:

30 / 120-ROUND MAGAZINE CUT-OFF SYSTEM.

With compatible KWA magazines, the system is designed to provide magazine cut-off functionality as part of the VM4 platform.

The selectable 30/120-round magazine format also gives compatible magazines two capacity configurations.

Because this functionality depends on compatible magazine architecture, it should not be assumed that every standard M4 AEG magazine will provide the same cut-off feature.

REAR-WIRED

LIPO READY.

The VM4-A1 is configured as a:

REAR-WIRED AEG

and is described by KWA as:

LIPO READY.

Battery voltage, dimensions, connector type and discharge characteristics should still be confirmed against KWA’s current recommendations for the exact production version.

“LiPo ready” should not be interpreted as universal compatibility with every LiPo battery.

VM4-A1 // PERFORMANCE ARCHITECTURE

Brand: KWA

Platform: VM4-A1 V2.5 / M4 RIS Carbine

Operating System: Electric AEG

Performance System: KWA Variable Performance System / VPS

Manufacturer-Listed Adjustment Range: Approximately 390–440 FPS

Gearbox: Custom V2.5 Metal Gearbox

Gear Set: Upgraded High-Speed

Motor: Improved High-Torque

Electrical System: Integrated Switch Life Extender

Hop-Up: Rotary Style

Upper Receiver: One-Piece Full Metal

Lower Receiver: Metal

Barrel Assembly: Metal

Buffer Tube: Metal

Grip: PTS Enhanced Polymer Grip

Magazine System: Compatible 30/120rd Magazine Cut-Off

Wiring: Rear-Wired

Battery Platform: LiPo Ready per KWA specifications

390–440 FPS

FIELD LIMITS MATTER.

The VM4-A1’s adjustable VPS is one of its biggest advantages, but the upper end of its manufacturer-listed range can exceed the limits used by some airsoft fields and events.

Always measure the rifle using a chronograph with the BB weight required by the field.

Never assume that simply adjusting the rifle to a particular VPS position guarantees a specific FPS or joule output.

CUSTOM KWA

VM4-A1 V2.5 // M4 RIS CARBINE.

The Custom KWA VM4-A1 V2.5 / M4 RIS Carbine Airsoft AEG Rifle takes classic M4 styling and places a far more sophisticated electric architecture underneath it.

Its combination of the KWA Variable Performance System, approximately 390–440 FPS manufacturer-listed adjustment range, custom V2.5 gearbox, upgraded high-speed gears, improved high-torque motor, integrated Switch Life Extender, rotary hop-up, metal receiver construction, PTS Enhanced Polymer Grip and compatible 30/120-round magazine cut-off system creates an M4 AEG built around adjustability and a distinctive KWA drivetrain.

For customers searching for a KWA VM4-A1, KWA VM4 V2.5, adjustable FPS airsoft AEG, KWA VPS airsoft rifle, full metal M4 RIS AEG, KWA M4 airsoft rifle Canada, or custom KWA VM4-A1 Canada, this platform delivers classic carbine styling backed by some of KWA’s most recognizable AEG technology.

KWA // VM4-A1 V2.5

VPS // 390–440 FPS // V2.5 GEARBOX // FULL METAL

CLASSIC M4 ARCHITECTURE. // KWA VARIABLE PERFORMANCE.