
KWA LM4/KSC M4 ARP9 Adapter
$189
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Proudly Made in the US 1-Year Warranty + Lifetime Support *
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KWA LM4/KSC M4 ARP9 Adapter Details
KWA LM4/KSC M4 ARP9 Adapter
The KWA LM4 and KSC M4 are highly respected gas blowback rifle platforms, known for their realistic operation, durability, and strong performance in the field. The TAPP KWA LM4/KSC M4 ARP9 Adapter enhances these platforms by enabling the use of ARP9 AEG magazines, which offer higher capacity and easier reloads. This adapter, designed and built in the USA, provides a pre-built, plug-and-play solution that broadens your magazine options and improves your rifle‚is tactical flexibility.
Key Features:
– ARP9 Magazine Compatibility: Adapt your KWA LM4 or KSC M4 to use ARP9 AEG magazines, providing greater capacity and streamlined reloading, ideal for extended engagements.
– HPA Powered: Optimized for 150 max, recommended PSI: 150 max, recommended 120, this adapter ensures consistent and reliable performance, keeping your rifle in top condition during intense skirmishes (HPA kit available separately at tappairsoft. com/hpa).
– Enhanced Reload Efficiency: The ARP9 magazines allow for faster and more intuitive reloads, giving you an advantage in fast-paced situations.
– One-Piece Magazine Adapter Design: Specifically engineered to improve the overall functionality and reliability of your M4, providing a smooth and efficient reloading experience.
– Advanced BB Feeding System: Ensures smooth, single-stack BB flow, reducing the risk of jams and maximizing reliability in the heat of battle.
– Durable Construction: Built from lightweight, durable SLS Nylon PA12 with the option of upgrading to PA11 Carbon Fiber material, this adapter is crafted to withstand the demands of intense airsoft action.
What‚is Included:
– Fully Assembled Adapter: The TAPP KWA LM4/KSC M4 ARP9 Adapter comes pre-built and ready to use, with no need for additional modifications or sacrifices to existing magazines.
– HPA Foster Fitting (US Spec): Ensures a secure and reliable connection, keeping you focused on the game.
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: KWA LM4, KSC M4
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.
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 Project1 Year Warranty + Lifetime Support
All Tapp Airsoft products include a 1-year warranty. We also offer lifetime support for technical issues and replacement parts (fees apply).
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PRO ADAPTER
Designed for added Performance, Ergonomics and Aesthetics.
20-80% Condensed Dimensions
We've designed each system to create the sleekest profile.CNC Feed Nozzle
Areas under repeated use or load have been upgraded with replaceable CNC parts.0.01mm Precision Tolerances
BB-Stop tech optimized for flow and consistency.Individually Designed
Drums and mags are positioned to give a “meant-to-be-there” feel.






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