M870 ARP9 Adapter

$19.99

PRO Adapter

One-Piece, Low-Profile, CNC Feed Nozzle, and Advanced BB-Tech. 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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M870 ARP9 Adapter Details

M870 ARP9 Adapter

Upgrade your M870 shotgun with a USA‑built, plug‑and‑play adapter now 3D printed in Nylon PA12 with the option of upgrading to PA11 Carbon Fiber for superior strength, longevity, and consistent performance. This adapter enables the use of ARP9 AEG magazines, transforming your classic tri‑shot platform into a compact, high‑capacity powerhouse built for fast, efficient reloading.

Key Features:

ARP9 Magazine Compatibility: Convert your M870 to use ARP9 AEG magazines, providing a compact, high‑capacity solution perfect for extended skirmishes and fast reloading.

One‑Piece Adapter Design: Precision‑engineered for smooth feeding, consistent operation, and improved reliability in dynamic gameplay.

Versatile Fit: Compatible with most tri‑shot shotguns, offering broad platform adaptability and enhanced tactical flexibility.

Nylon PA12 with the option of upgrading to PA11 Carbon Fiber Construction: 3D printed in Carbon Fiber–reinforced Nylon PA11 for superior rigidity, impact resistance, heat tolerance, and long‑term durability without extra weight.

What’s Included:

Fully Assembled Adapter: The TAPP M870 ARP9 Adapter comes ready to use right out of the box—no modifications required.

Proudly made in the USA. Backed by a 30‑day warranty and lifetime technical support, with access to replacement parts (fees may apply).

Compatibility: M870 and most tri‑shot shotguns

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.

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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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