KJW M4 ARP9 Adapter

$169.99

PRO Adapter

One-Piece, Low-Profile, CNC Feed Nozzle, and Advanced BB-Tech. Learn more..

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 *

Product Details

Warranty/Support

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KJW M4 ARP9 Adapter Details

KJW M4 ARP9 Adapter

The KJW M4 is a reliable airsoft platform, known for its realistic performance and robust construction. The TAPP KJW M4 ARP9 Adapter enhances this platform by enabling the use of ARP9 AEG magazines, significantly increasing your magazine capacity and improving reload efficiency. Designed and built in the USA, this pre-built, plug-and-play adapter seamlessly integrates with ARP9 magazines and utilizes High Pressure Air (HPA) to deliver consistent and reliable performance in extended engagements.

Key Features:

ARP9 Magazine Compatibility: Adapt your KJW M4 to use ARP9 AEG magazines, providing higher capacity and smoother reloads, ideal for prolonged skirmishes.

HPA Powered: Optimized for 150 max, recommended PSI: 150 max, recommended 120, this adapter ensures consistent and reliable performance, enhancing the power and efficiency of your KJW M4 (HPA kit available separately at tappairsoft. com/hpa).

Advanced BB Feeding System: Ensures smooth, single-stack BB flow from source to feed lip, reducing ammo wastage and eliminating the need for inserts or double stacking.

Durable Construction: Built from lightweight, durable SLS Nylon PA12 with the option of upgrading to PA11 Carbon Fiber material, this adapter is designed to withstand the demands of intense airsoft action.

What‚is Included:

Fully Assembled Adapter: The TAPP KJW M4 ARP9 Adapter is ready to use right out of the box.

HPA Foster Fitting (US Spec): Ensures a secure and reliable connection, keeping your focus on the mission.

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: KJW M4

HIGH-PERFORMANCE MATERIAL

CARBON FIBER.
CARBON FIBER.
CARBON FIBER.

Strength you can feel. Weight you barely notice. Precision performance. Engineered for those who demand more than plastic.

Unmatched Strength

• 38% Higher Tensile Strength
• 3x Stiffer than Nylon
• Won't deform

Superior Resistance

• High-Temp Ready
• Thermal Stability
• UV & Moisture Resistant

Pro Finish

• Sleek Matte Black
• Metal strength, plastic weight

HPA Optimized

• Lightweight composite build
• Tested for field durability

Rigid Structure

• Perfect Airseal Integrity
• Smooth mag insertion

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.

Start Your Project
Custom Cerakote Precision

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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