The 
Raven Evolution NEO RIS Carbine AEG is a high-performance, entry-level airsoft rifle designed for players seeking modern internal features at an affordable price. It features a lightweight nylon-filled polymer body and a full-metal LEVIN gearbox with an integrated Electronic Trigger System (ETS)
 
Key Specifications
According to manufacturers and retailers like BZ Tactical and Extreme Airsoft, the NEO series includes several premium features typically found in higher-end models: 
Gearbox: Full-metal LEVIN gearbox (V2-style) featuring a True Quick Spring Change system for easy maintenance and tuning.
Internal Components: Equipped with 8mm metal bearings, 18:1 gearset, 16-gauge silver-coated wiring, and a full-metal teeth piston.
Barrel & Accuracy: Includes a 6.03mm precision inner barrel paired with an adjustable rotary hop-up for consistent shot groupings.
Battery Compatibility: Pre-installed Electronic Trigger System (ETS) allows for the use of 11.1v LiPo batteries (Deans connector) for improved trigger response.
Performance: Typically fires at approximately 320 FPS with 0.20g BBs, making it suitable for most UK skirmish sites. 
BZ Tactical +6
Design & Ergonomics
The "RIS" (Rail Interface System) version follows a classic M4 platform design: 
Rail System: Features a traditional 20mm Picatinny quad-rail handguard made of nylon-filled polymer, allowing for the attachment of optics, grips, and lights.
Body Material: The receiver and rail system are constructed from durable nylon-filled polymer to keep the overall weight low for better maneuverability.
Adjustability: Comes with an adjustable carbine stock to suit different user heights and tactical needs.