The ASG SA-H03 ONE™ ETU™ Kestrel™ Carbine ETU

The Kestrel V2 Basic ETU by Eshooter is an advanced ETU system featuring ease of use, durability and functionality. The Kestrel V2 Basic is programmable with trigger pulls, works with both brush and brushless motors in High Speed and High Torque configurations and increases the reliability of the replica and protects internal parts in the event of overload due to motor damage or battery drain.

Functions of the Kestrel Basic system:

-Pre-cocking programmable in 5 stages with a piston position learning function. 
(function requires a few single shots after connecting the battery for calibration)
-Active Break. The replica performs a full cycle with each shot, so that no unnecessary overloads are created in the GB due to performing part of the cycle.
-Locked Rotor Protection, function protects the inside of the replica in case of damage to the motor
-Battery Drain Protection. Protection against battery discharge. The motor vibrates, the blue LED illuminates five times to indicate battery drain
-Low/ High Voltage Protection. The module detects the number of battery cells and adjusts operation to different numbers of cells and voltages from 6V to 17V.

The SA-B16 carbine replica by Specna Arms has been made predominantly from a uniform zinc-aluminium alloy, with the use of steel components at the most critical points of the replica (so all screws, pins and the tactical sling mount are steel). The barrel, which houses the battery, as well as the pistol grip, are made of polymer plastic. The body of the replica and the RIS rail assembly have been subjected to the anodising process, which guarantees a high degree of protection of the replica against corrosion. The painting of the replica itself was done by a powder coating process, after the surface had been sandblasted. This ensures that the applied paint is much more abrasion resistant than usual. The Specna Arms markings have been applied to the barrel.
The rifle has been very well-fitted - in a manner previously seen almost exclusively in G&P or Classic Army manufacturers - and perfectly balanced. This ensures almost ideal manoeuvrability of the replica, while its weight is, in addition, when the replica is placed against the shoulder, almost imperceptible. 

The replica uses the new generation quick-change spring system, so called. SAEC™. This allows a quick and efficient adjustment of the replica's power to the conditions expected on the battlefield without the need for access to a workshop or a range of specialist tools. The process of replacing the spring is now even faster than with the previous version of the system.

Thanks to the SAEC™ System there is no need to pull the gearbox out of the replica - simply remove the buttstock and then unscrew the special pin located underneath it together with the spring guide bearing. The mainspring is replaced, the bolt is screwed back into the barrel, the butt is attached and... back in action! The whole operation requires only a long Phillips screwdriver to unscrew the stock.
The advantages of the SAEC™ System are difficult to overestimate. In the light of the prevailing trend throughout Europe towards legal restrictions on the discharge speed of the replica and the arrangements that exist within the communities themselves, this system guarantees the user considerable possibilities and a great deal of freedom. The SAEC™ System allows minimal time to replace the mainspring and thus adjust the replica's discharge velocity to the area of play so as to guarantee the ideal compromise between the effectiveness of the fire and the safety of yourself and other players.

The replica has been fully adapted to work with batteries of the type LiPo and LiFe. With a base initial discharge velocity of about ~430 FPS guaranteed by the factory-installed mainspring, the replica is perfectly suited for medium range operations.

The gearbox, reinforced at the height of the cylinder head, conceals a steel spring guide that is part of the SAEC™ System and mounted on 8mm ball bearings and washers steel gears. The system is secured with four anti-reverse pawls. The lightweight, polycarbonate plastic piston is provided with a set of steel teeth to increase its strength. It also uses cylinder type 2 and steel cut-off lever. The replica is factory-fitted with an accurate, rotating, polymer Hop-Up chamber which allows for very precise and stable adjustment of the BB under-cocking system.

Upgraded version has a number of new reinforced parts such as:

- a set of reinforced steel gears
- a bearing-mounted, steel spring guide
- a lightweight, polymer piston with steel rail
- an aluminium, sealed piston head
- a metal cylinder head
- a sealed, metal nozzle

The Upgraded has been fitted with a 22mm dorsal RIS rail, a Free-Float front RIS rail assembly. On the upper RIS rail, metal flip-up sights have been fitted, but they can freely be replaced by any optoelectronic sighting device. The discharge device is mounted on a 14mm left-hand thread, which allows a silencer to be attached in its place.

In order to increase the realism of the gameplay, the replica is also equipped with acting breech release.

The replica also comes with a steel hi-cap magazine that holds 300 rounds. 

The Specna Arms replicas are compatible with many magazines available on the market, including manufacturers such as:
 - BOYI,
 - Airsoft Systems,
 - SRC,
 - King Arms,
 - MAG,
 - STAR,
 - ACM.

The SAEC™ system is covered by European Patent number: 002639500

.