KWA Originals: RAINE-4 AEG Rifle

The KWA Originals RAINE-4 AEG Rifle is engineered for players who demand fast response, agile handling, and dependable performance straight out of the box. Designed as a compact, modern airsoft platform, the RAINE-4 blends lightweight construction with KWA’s proven internal technology to deliver smooth, consistent shots in every engagement.

At its core lies the KWA AEG 2.5+ gearbox system, offering crisp trigger response, efficient power delivery, and a quick-change spring for easy FPS adjustments to suit both indoor and outdoor play. The M-LOK compatible handguard allows easy customization with grips, lights, and accessories without adding unnecessary weight.

The PDW-style adjustable stock gives players superior maneuverability and control, while the reinforced polymer receiver keeps the rifle strong yet comfortable to carry through extended matches. Compact, reliable, and built for the modern field — the RAINE-4 is ready for action right out of the box.

• Powered by KWA’s upgraded v2.5+ gearbox with adjustable FPS
• All KWA Original (KO) line airsoft guns feature new ultra-lightweight high density polymer receivers
• Drop-in trigger ready, easily install your favorite MOSFETs or electronic triggers (not GATE ASTER compatible)
• K.O.R.E. lightweight polymer M-LOK handguard and PTS Enhanced Polymer Flip-up sights
• Rapid-deploy PDW stock
• Ambidextrous and oversized controls, including selector switch, mag and bolt catches
• Side-mounted charging handle allows easy hop access and can be mounted for right- or left-handed use without disassembly
• KWA’s new ergonomic and rugged nylon polymer pistol grip with custom texturing
• High quality, full metal two port muzzle brake
• One piece rotary hop up
• Includes a KWA M-LOK slim vertical grip and 2x M-LOK rail sections

Here at KWA, we’ve pushed the limits of the airsoft industry with top-tier performance and purpose-driven innovation while maintaining our stance as a brand for every airsofter.

The KWA Originals brand of airsoft guns focuses on a dynamic new approach to airsoft combat sports. Much like KWA’s release of the Ronin Series AEGs back in 2018, the KO Brand was devised to elevate airsoft as an industry and as a culture. KO is our pursuit to revitalize and reimagine what an airsoft gun is supposed to feel and look like while still paying homage and taking inspiration from classic weapon designs.

The next KWA guns to receive the special KO “polymerization” treatment are the QRF Series, TK.45C, and Ronin 47 AEGs. Each new KO release is a polymer port of their metal counterpart while shaving off almost a pound off from the original. These new KO releases feature the same upgrades as the KO EVE6 we announced in 2021 including the KO side charging handle and newly developed, high-strength polymer receiver body. Magazine compatibility will remain unchanged with each KO AEG able to accept their respective magazines from the original Ronins and QRF AEGs.

Internally, the new KO line shares the same 2.5+ adjustable FPS gearbox as the TK.45C, Ronin T6, QRF Mod Series, and Ronin 47. Install your favorite aftermarket electronic trigger group and you have an ultra-responsive and lightweight polymer AEG with legendary KWA performance. Storm the Tactical League Battlegrounds by day and then adjust your FPS to lurk the plywood Jungle at Project N1 by night.

FPS Range: 330-370 (adjustable)

Specifications:

Length: 560mm – 680mm (Adjustable)

Weight: Approx. 2340g

Inner Barrel: Approx. 160mm

Magazine Capacity: 120rd Mid-Cap. Utilizes KWA QRF MOD.2 Magazines

Gearbox: KWA Ver 2.5+ Full Metal Adjustable FPS, Upgradeable

Motor: Long Type

Fire Modes: Semi/Full-Auto, Safety

Battery: 11.1v Small Brick Type recommended (Battery not included. Wired to stock with Deans connector)

Hopup: Yes, Adjustable

Package Includes: Rifle, Magazine, KWA Slim Vertical Grip, 2x 4-Slot M-LOK Rail Sections, Manual