SA-E09-RH EDGE 2.0™ Carbine Replica Heavy Ops Stock - Black Made of: ZnAl + steel + plasticLength: 825-910mmWeight: 2770gMuzzle Velocity: ~ 380/~ 310FPSETU Binery function, Pre cocking, full metal gears and gearbox housing, slimline metal trigger Material: Zinc and aluminum alloy, steel, nylon reinforced polymer Muzzle Velocity: ~310 / ~380 FPS ESA Quick Spring Change System 7.45 precision barrel High Torque Motor Manufacturer: Specna Arms Manufacturer: Specna Arms The Specna Arms Æther™ Complete Gearbox is a high-performance, reinforced Version 2 gearbox for M4/M16 Gel Blaster guns, featuring a strong shell, CNC steel gears (18:1), 8mm bearings, and the advanced HAL™ ETU (Electronic Trigger Unit) for features like binary trigger, active braking, and programmable fire modes. It's designed for durability and upgrades, with inspection windows for pre-cocking/AOE and trigger tuning, making it a premium, customizable drop-in solution for upgrading or building high-end airsoft replicas. Key Features: Reinforced Æther™ Shell: Made from 7075 aluminum with added material at stress points and screw holes for alignment. HAL™ ETU (Electronic Trigger Unit): Magnetic sensors, active braking, binary trigger, adjustable sensitivity/pre-cocking, and programmable modes (semi, full, burst). High-Quality Internals: 18:1 gears, polymer piston with steel teeth, aluminum head/nozzle, steel cylinder, and 8mm bearings. Upgrade-Friendly: Includes windows for pre-cocking/AOE checks, anti-reversal release, and motor inspection. Compatibility: A standard V2 design, ideal for Specna Arms Prime™ series and other M4 platforms, but always confirm compatibility. Benefits: Enhanced Durability: Built tough for stronger springs and intense use. Improved Performance: Fast trigger response, consistent shots, and advanced fire controls. Easy Tuning: Quick adjustments for trigger pull and pre-cocking without full disassembly. In essence, the Specna Arms Æther™ is a top-tier, feature-rich V2 gearbox aimed at players wanting extreme reliability and customization in their M4 AEG. A new dimension of Gelsoft with the HAL² electronic control unit by Specna Arms® The HAL² is a high-tech electronic unit that represents the new brain of your replica. Based on the Hall effect, the trigger* provides unprecedented sensitivity, even over 500 points, as well as responsive operation, while being insensitive to dirt or external light. The single-board design ensures quick and trouble-free installation, while the built- in Bluetooth® Low Energy module provides an easy and stable connection to your phone for configuration while ensuring long operation on the replica's battery. A number of sensors monitor the replica's flawless operation and will prevent damage to the replica when it detects a problem.