The Specna Arms SA-C21 CORE HAL ETU Gen.2 is a versatile AEG carbine for skirmishers who value practical performance out of the box. It combines a programmable electronic trigger unit with a robust, field-ready build for reliable use in weekend games and longer milsim events.
The HAL ETU brings responsive, consistent trigger control with magnetic sensor detection, active brake, and multiple programmable fire modes. You can adjust trigger sensitivity and pre-cocking directly via the trigger, so fine-tuning for your play style takes minutes, not tools. A quick-change spring system (ESA) lets you adapt muzzle energy for different sites without opening the gearbox, making it easy to stay within local limits while keeping the replica ready for varied roles.
The redesigned hop-up system features a top-down TDC Magnus chamber and a flat-hop eraser for stable, predictable flight paths. Paired with a precision inner barrel, it helps you place shots confidently at typical engagement distances. The reinforced Ather gearbox frame adds durability and serviceability with thoughtful touches like inspection windows and a mainspring release. Externally, the nylon fiber-reinforced receiver keeps weight down without the usual creaks or wobble, and the adjustable stock helps you set a comfortable length of pull with solid shoulder contact. A continuous top rail supports optics and accessories, and the standard flash hider is mounted on a commonly used thread. The system is also compatible with brushless motors if you plan future upgrades.
Note: Battery and charger are not included. On first power-up, hold the trigger in SAFE for a few seconds to activate the HAL module. Use high-quality BBs for best results.
Features
- Programmable HAL ETU with adjustable trigger feel and pre-cocking
- Quick-change spring system for easy field power adjustments
- TDC Magnus rotary hop-up with flat-hop eraser for stable flight
- Reinforced gearbox with maintenance-friendly access and spring release
- Lightweight, tight-fitting polymer receiver for comfortable all-day use
- Compatible with brushless motors for future upgrade paths
In the package
- Replica
- 2 x mid-cap S-MAG magazine
- BB speedloader
- M90 additional spring
- Cleaning rod
- Allen key
- Small Tamiya to Deans adapter
