KWA Full Metal VM4A1 2.5 / M4 Carbine Airsoft AEG Rifle – Elite Performance, Tactical Versatility

The KWA Full Metal VM4A1 2.5 Carbine is more than just another M4-style airsoft AEG — it’s a cutting-edge rifle engineered for serious players who demand top-tier performance, rugged reliability, and customization straight out of the box. Featuring KWA’s exclusive Variable Performance System (VPS), the VM4A1 allows you to easily adjust your FPS from 390 to 440 FPS with the included tool — no gearbox disassembly required.

Whether you're playing in a strict indoor CQB environment or an outdoor milsim skirmish, the VM4A1 gives you the flexibility to tune your rifle to meet any field’s velocity limits. One rifle. Any field. Maximum efficiency.

Built Like a Tank: Full Metal Construction

This rifle means business. From the full metal one-piece upper receiver to the reinforced buffer tube, barrel assembly, and lower receiver, the VM4A1 offers unparalleled durability. Built to replicate the feel and function of a real M4A1, it offers the solid heft and tactical realism advanced players and training professionals demand.

Paired with a PTS Enhanced Polymer Grip, this rifle also ensures a comfortable, ergonomic hold — even during long hours of gameplay.

Upgraded Gearbox – Version 2.5 Powerhouse

At the heart of the VM4A1 lies KWA’s custom Ver. 2.5 full metal gearbox, upgraded with 9mm ball bearing bushings, a high-speed gear set, and an improved high-torque motor for blazing-fast response and long-term reliability. The Switch Life Extender (SLE) is integrated into the electrical system to prevent trigger contact burnout — a common issue in other AEGs — extending the rifle’s service life dramatically.

This rifle is also LiPo-ready and wired to the rear with a Deans connector, allowing you to plug in high-performance batteries and unleash the VM4A1’s full potential with faster trigger response and improved cycle rate.

Smart Features for Tactical Advantage

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  Rotary-style hop-up: Precisely dial in your shot trajectory with consistent and easy adjustments.

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  Mid-cap magazine with cut-off feature: The included 30/120 round mid-cap magazine features a realistic magazine cut-off that stops firing when empty — adding realism and encouraging tactical reloads.

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  Threaded outer barrel (14mm CCW): Add suppressors, tracer units, or mock muzzle devices with ease.

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Designed by Professionals, for Professionals

Originally developed with military and law enforcement training in mind, KWA airsoft rifles are widely respected for their advanced engineering and battlefield-tested design. The VM4A1 is no exception — it’s a rifle built not just for performance, but also for longevity and adaptability in any environment.

Whether you're a seasoned milsim operator or a competitive airsoft player, the KWA VM4A1 2.5 Carbine delivers elite-level performance from the first shot to the last.

Specifications:

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  FPS Range: 390–440 FPS (adjustable)

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  Length: 825.5mm – 908.1mm (adjustable)

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  Weight: 3220g

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  Inner Barrel Length: 396.9mm

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  Magazine: 30/120rd mid-cap with cutoff

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  Fire Modes: Semi, Full-Auto, Safe

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  Gearbox: Ver. 2.5 full metal

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  Hopup: Yes, rotary adjustable

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  Battery: 7.4v LiPo (not included, rear-wired)

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  Thread Direction: 14mm negative (CCW)

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Package Includes:

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  KWA VM4A1 Rifle

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  30/120rd Mid-Cap Magazine

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  VPS Tool

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  User Manual

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Get ready to dominate the field with tactical precision, rugged construction, and unmatched adjustability — the KWA VM4A1 2.5 is your next mission-ready AEG.