GHK M4/MK18/G5 M4 Competition PRO Adapter

$318.99

TAPP x Wushu HPA Grip

Carbon Fiber grip with HPA line routing channel. Learn more..

Carbon Fiber

Built to last. Carbon Fiber infused. Its durability speaks for itself.

Cerakote Color

Default is Grey, no Cerakote applied. Learn more..
*Drum body not cerakoted.

None Graphite Black +$39 USMC Red +$39 NRA Blue +$39 Multicam Bright Green +$39 Magpul Flat Dark Earth +$39 Bright White +$49 Gold +$49 Prison Pink +$49 Bright Purple +$49 Burnt Bronze +$49 Custom. Enter Cerakote Item ID in Checkout Notes. i.e. A-123 +$99

Extended Warranty

Extended 1-year US | 90-days International Learn more..

Free US Shipping On Orders Over $99 With Code "Freeship"
Proudly Made in the US 30-Day Warranty + Lifetime Support *

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GHK M4/MK18/G5 M4 Competition PRO Adapter Details

GHK M4/MK18/G5 M4 Competition PRO Adapter

The GHK platforms, including the M4, MK18, and G5, are renowned for their powerful gas blowback recoil and realistic shooting experience. The TAPP GHK M4/MK18/G5 M4 Competition Adapter enhances these platforms by allowing the use of M4 AEG magazines while integrating HPA functionality for consistent performance and reduced frame stress. Designed specifically for competitive airsoft, this adapter features a flared magwell for lightning-fast reloads, ensuring you maintain an edge in high-speed engagements. Proudly made in the USA, this pre-built, plug-and-play adapter seamlessly integrates with your GHK platform for superior reliability and efficiency.

Key Features:

M4 Magazine Compatibility: Convert your GHK M4, MK18, or G5 to use M4 AEG magazines, increasing capacity and enabling faster reloads essential for competition play.

Flared Magwell: Specifically designed for competition, the flared magwell enables rapid and smooth magazine changes, keeping you in the fight without delay.

HPA Powered: Optimized for 150 max, recommended PSI: 150 max, recommended 120, this adapter helps regulate the powerful recoil of GHK platforms while maintaining peak shot performance (HPA kit available separately at tappairsoft. com/hpa).

Recoil Optimization: The HPA system helps mitigate excessive frame stress, reducing the risk of cracks and failures while preserving the authentic blowback experience.

Enhanced BB Feeding System: Engineered to optimize feeding reliability, minimizing misfeeds and jams during intense skirmishes.

Durable Construction: Made from high-strength, impact-resistant SLS Nylon PA12 with the option of upgrading to PA11 Carbon Fiber, built to withstand rigorous competitive play.

Plug-and-Play Installation: Fully assembled and ready to use out of the box—no additional modifications required.

What‚is Included:

Fully Assembled M4 Competition Adapter: Pre-built and optimized for competitive performance.

HPA Foster Fitting (US Spec): Ensures a secure and reliable connection for uninterrupted gameplay.

Proudly made in the USA, this adapter is backed by a 30-day warranty and lifetime technical support, with access to replacement parts (fees may apply).

Compatibility: GHK M4, GHK MK18, GHK G5

CARBON FIBER. CARBON FIBER.
CARBON FIBER.


Strength you can feel. Weight you barely notice. Precision that defines performance.
Matte black, rigid, and ready — engineered for those who demand more than plastic.

Unmatched Strength and Rigidity

Up to 38% Higher Tensile Strength – 69 MPa vs. 50 MPa for Nylon 12, giving parts more load-bearing capability.
Nearly 3× Stiffer – With a tensile modulus of 5.3 GPa (vs. 1.9 GPa), PA11 CF parts hold their shape under pressure and stress.
Over 65% Greater Flexural Strength – 110 MPa vs. 66 MPa for Nylon 12 means stronger parts that won’t bend or deform.

Superior Heat and Environmental Resistance

Designed for high-temperature applications where Nylon 12 softens or degrades.
Carbon fiber reinforcement improves thermal stability and lowers thermal expansion for precision even under heat.
Naturally resistant to moisture and UV exposure, ideal for rigorous outdoor use.

Professional Finish and Lightweight Design

Carbon fiber infusion produces a sleek matte black surface — functional and aesthetic right off the printer.
Delivers metal-like strength at a fraction of the weight, enabling lighter, more efficient assemblies.

Designed for High-Pressure HPA systems

Lightweight carbon fiber composite reduces load without sacrificing strength or rigidity.
Tested for durability across extreme temperature and humidity conditions to ensure reliable field performance.

Rigid Carbon Fiber Structure

Low expansion under heat preserves airseal integrity during rapid-fire or sustained full-auto use.
Machined precision surfaces ensure smooth magazine insertion and consistent alignment with feed paths.

Advanced Finishing

Custom Cerakote & Precision Coatings

Our in-house finishing delivers Cerakote and precision laser engraving with exceptional durability and style. Every surface is treated, coated, and inspected to ensure flawless performance and lasting quality.

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30 Day Warranty + Lifetime Support

All Tapp Airsoft products include a 30-day warranty. We also offer lifetime support for technical issues and replacement parts (fees apply).

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    Carbon Fiber Nylon 11

    PRO ADAPTER

    Designed for added Performance, Ergonomics and Aesthetics.

    +Low-Profile

    20-80% Condensed Dimensions

    We've designed each system to create the sleekest profile.
    +Strength

    CNC Feed Nozzle

    Areas under repeated use or load have been upgraded with replaceable CNC parts.
    +Feeding

    0.01mm Precision Tolerances

    BB-Stop tech optimized for flow and consistency.
    +Straighter Alignment

    Individually Designed

    Drums and mags are positioned to give a “meant-to-be-there” feel.
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