UMAREX x H&K HK416 A4

FULL-SIZE GAS BLOWBACK AIRSOFT RIFLE // KWA

OFFICIALLY LICENSED H&K • HEAVYWEIGHT METAL CONSTRUCTION • KWA GBB SYSTEM • CNC QUAD RAIL • 6-POSITION HK416 STOCK

UMAREX // HECKLER & KOCH // HK416 A4 // KWA // GAS BLOWBACK // FULL-SIZE GBBR // OFFICIALLY LICENSED

Official H&K identity. Full-size HK416 proportions. Mechanical gas blowback character.

The Umarex x H&K HK416 A4 Full Size Airsoft GBB Rifle by KWA brings together authentic Heckler & Koch licensing, substantial metal construction, classic HK416 styling, and KWA’s proprietary gas blowback architecture in one premium airsoft rifle.

Rather than simply borrowing the general appearance of the HK416, this replica is fully licensed by Heckler & Koch and finished with laser-engraved markings. A precision CNC-machined free-float quad-rail handguard, full-length Picatinny top rail, adjustable HK416 stock, flip-up iron sights, and reinforced polymer furniture complete the unmistakable exterior.

Underneath is a KWA-derived proprietary GBB system designed to deliver strong mechanical cycling and noticeable recoil feedback.

For the player or collector looking for a licensed full-size HK416 gas blowback rifle, this A4 configuration has the presence to match its name.

HECKLER & KOCH

OFFICIALLY LICENSED — NOT GENERICALLY INSPIRED.

One of the defining features of this rifle is its:

OFFICIAL H&K LICENSING

The receiver features laser-engraved Heckler & Koch markings, giving the rifle the branded exterior details expected from an officially licensed replica.

That matters on a platform like the HK416.

The receiver markings, handguard architecture, stock, sights, and overall proportions work together to create a cohesive H&K presentation rather than a standard AR-style GBBR with HK-inspired furniture.

HK416 A4

THE FULL-SIZE CONFIGURATION.

This isn’t a compact PDW or shortened CQB build.

The HK416 A4 maintains a:

FULL-SIZE RIFLE PROFILE

giving the platform a substantial presence and plenty of usable rail space.

Its proportions are complemented by the recognizable HK416 furniture and quad-rail front end, creating a configuration that feels very different from lightweight modern M-LOK carbines.

For customers specifically looking for the classic full-size HK416 airsoft rifle aesthetic, this model delivers it without trying to redesign the platform around current minimalist trends.

HEAVYWEIGHT METAL

BUILT FOR A SUBSTANTIAL GBBR FEEL.

Umarex and KWA build the central structure around:

HEAVY-DUTY METAL CONSTRUCTION

giving the HK416 A4 the weight and solid exterior feel expected from a premium gas blowback rifle.

That metal construction is paired with:

HIGH-STRENGTH NYLON-REINFORCED POLYMER FURNITURE

for components such as the stock and grip areas where reinforced polymer is appropriate.

The combination creates the familiar mix of metal architecture and durable synthetic furniture associated with the HK416 design.

KWA GBB

PROPRIETARY GAS BLOWBACK ARCHITECTURE.

Inside the rifle is a:

KWA-DERIVED PROPRIETARY GBB SYSTEM

The system mechanically cycles during operation, creating bolt movement and strong recoil feedback.

That hard-kick blowback action is a major part of the HK416 A4 experience and separates it from electric HK416 replicas using conventional gearboxes.

Because this is a proprietary KWA gas system, compatibility should not be assumed with magazines or internal components from unrelated GBB platforms.

Gas performance can also vary according to temperature, magazine temperature, seals, maintenance, gas condition, and firing pace.

CNC QUAD RAIL

CLASSIC HK416 FRONT-END ARCHITECTURE.

Surrounding the front end is a:

PRECISION CNC-MACHINED FREE-FLOAT QUAD-RAIL HANDGUARD

This is one of the most recognizable features of the rifle.

Rather than replacing the classic HK416 front end with a slim M-LOK rail, the A4 retains the substantial quad-rail architecture that gives the platform much of its visual identity.

The handguard provides multiple mounting surfaces for appropriately compatible airsoft accessories.

FULL-LENGTH PICATINNY

A CONTINUOUS TOP MOUNTING SURFACE.

Running across the upper configuration is a:

FULL-LENGTH PICATINNY TOP RAIL

providing mounting space for appropriately compatible airsoft optics and accessories.

The top rail integrates naturally with the railed handguard and preserves the purposeful, full-size appearance of the HK416 A4.

6-POSITION HK416 STOCK

ADJUSTABLE REAR CONFIGURATION.

At the rear, the rifle features a:

6-POSITION ADJUSTABLE HK416 STOCK

allowing the length of pull to be adjusted across multiple positions.

More importantly from a design standpoint, the stock maintains the recognizable HK416 profile instead of substituting generic aftermarket furniture.

Together with the reinforced polymer construction, it completes the rifle’s licensed H&K appearance.

FLIP-UP IRON SIGHTS

COMPLETE STRAIGHT OUT OF THE BOX.

The HK416 A4 includes:

FLIP-UP FRONT + REAR IRON SIGHTS

providing a complete factory sight arrangement while preserving the Picatinny rail for compatible optics.

The folding design also allows the sights to maintain a lower profile when an appropriate optic setup is installed.

THE HK416 A4 FORMULA

Official Heckler & Koch Licensing — authentic H&K identity with laser-engraved markings.

Heavyweight Metal Construction — substantial full-size GBBR architecture.

KWA Proprietary GBB System — mechanically cycling gas operation.

Hard-Kick Blowback — noticeable recoil feedback and bolt movement.

CNC Free-Float Quad Rail — classic HK416 handguard configuration.

Full-Length Picatinny Rail — extensive compatible mounting space.

6-Position HK416 Stock — adjustable length of pull.

Flip-Up Iron Sights — front and rear factory sight system.

KWA GBB // COMPATIBILITY & CARE

The HK416 A4 uses a proprietary mechanically cycling gas system. Magazine temperature, ambient temperature, seals, gas condition, maintenance, and firing pace can all affect operation.

Follow current KWA/Umarex recommendations for compatible gas, magazines, replacement components, and routine maintenance. Aftermarket components should be verified specifically for this KWA-derived platform before purchase.

Always chronograph the rifle according to the requirements of the airsoft field where it will be used.

UMAREX x H&K HK416 A4

LICENSED H&K DETAIL WITH KWA GAS BLOWBACK CHARACTER.

The Umarex x H&K HK416 A4 Full Size Airsoft GBB Rifle by KWA brings together the features that make a premium licensed GBBR stand out: authentic branding, substantial construction, recognizable furniture, and a mechanically engaging gas system.

Its combination of official Heckler & Koch licensing, laser-engraved H&K markings, heavyweight metal construction, reinforced polymer furniture, KWA proprietary gas blowback system, hard-kick recoil, CNC-machined free-float quad rail, full-length Picatinny top rail, six-position HK416 stock, and flip-up iron sights creates an unmistakably full-size HK416 package.

For customers searching for an Umarex HK416 A4 GBBR, H&K HK416 gas blowback airsoft rifle, KWA HK416 GBB, licensed Heckler & Koch airsoft rifle, full-metal HK416 airsoft gun, full-size HK416 GBBR, or Umarex HK416 A4 Canada, this model delivers classic HK416 styling with the mechanical character of KWA gas blowback.

UMAREX / HECKLER & KOCH / HK416 A4 / KWA / GAS BLOWBACK / FULL-SIZE GBBR