Onyx Red Dot

Overview

The Specna Arms CORE™ Onyx Red Dot Sight is a compact, rugged collimate optic built for airsoft players who demand rapid target acquisition, reliability in any condition, and versatility in how they engage. With dual-color reticles and multiple aiming-point shapes, Onyx adapts to bright sun, low light, CQB distances, and field scenarios where speed wins the duel. As a member of the Specna Arms CORE family, this sight delivers durable performance at an approachable price, making it a smart upgrade for both new players and seasoned milsim crews. For mounting and field enhancement, pair this optic with your favorite Tactical Gear and consider spare power options from our Batteries & Chargers.

Key features

• Two-colour reticle with red and green options for adaptive visibility across lighting conditions.
• Five brightness levels to dial in the perfect aiming point in bright daylight or dusk.
• Four aiming-point shapes to switch between fast dot, precision cross, circle-with-dot, and other configurations for different scenarios.
• 30 mm lens diameter with a glass cover for clear, distortion-free aiming reticles.
• IPX4 waterproof and fog-resistant lens performance, ideal for wet fields and varied weather.
• 1 click = 1/2 MOA adjustment for precise, repeatable zeroing and corrections on the fly.
• Lightweight, durable construction designed to withstand the rigors of airsoft play, CQB, and milsim environments.
• Powered by a single CR2032 battery (battery not included) for convenient field replacements.
• Glass cover protects the reticle without sacrificing clarity.

Performance and use cases

The Onyx Red Dot Sight excels in fast-paced engagements typical of CQB and urban environments, where a clear, adaptable reticle can mean the difference between a clean takedown and a missed window. The ability to switch between four reticle shapes lets you tailor aiming geometry to your weapon system and play style—whether you’re running a compact SMG on a tight corner push or a longer rifle setup in midfield skirmishes. The dual-color reticle is especially valuable on bright days or indoor arenas with varied lighting, enabling you to maintain a crisp sight picture without excessive brightness that could reveal your position.

Compatibility and mounting

This sight is designed for standard 30 mm optics rails and can be paired with a wide range of mounts and rings available in our accessories catalog. For best results, choose a secure 30 mm mount that aligns with your airsoft platform and allows precise windage and elevation adjustments. If you’re stocking up on power options, browse our Batteries & Chargers to keep your setup field-ready, and check compatible accessories in our Tactical Gear collection.

What’s included

• Instruction
• Optics cloth
• Red dot sight

As part of the Specna Arms CORE™ lineup, Onyx combines reliable performance with thoughtful design, ensuring you gain a tactical edge on the battlefield without overpaying. Learn more about the Specna Arms philosophy and how CORE optics are tuned for both beginners and experienced players.

Model	Specna Arms CORE™ Onyx Red Dot Sight
Type	Red dot sight / Collimator
Reticle colors	Red and Green
Brightness levels	5 levels
Aiming-point shapes	4 shapes (including simple dot)
Lens diameter	30 mm
Waterproof rating	IPX4
Lens treatment	Fog-resistant; glass cover
Adjustment	1 click = 1/2 MOA
Power	CR2032 battery (not included)
Included in box	Instruction, optics cloth, red dot sight