M4 SI SA-C17 CORE HAL ETU RIFLE BLACK SPECNA ARMS (SPE-01-041702)

The body, slide, including the enlarged SF-type stock that houses the magazine, and pistol grip are made of nylon fiber reinforced polymer.
Other components such as the barrel, forend, flash hider, extended charging handle and tactical sling assembly are made of metal (all screws, pins, bearing ejection port and dummy stop are steel).
The barrel is marked with the serial number.
The replica is mounted very well, the user will not feel any play between the lower and upper body. The use of a lightweight polymer body has allowed to reduce its weight, which makes it perfect for dynamic games or prolonged milslim.
Additionally, the fiberglass reinforcement makes the body stronger than polymer and metal bodies.
The replica uses the esa™ quick-change spring system.
This allows the power of the replica to be adapted quickly and efficiently to the conditions expected on the playing field, without the need for access to a workshop or numerous special tools: simply unscrew the stock guide to gain access to replace the spring without having to remove or disassemble the gearbox.
Taking into account the arrangements in the environment itself, this system guarantees the user extensive possibilities and freedom.
The esa™ system allows you to replace the spring in a minimum of time and, consequently, to adapt the speed of discharge of the replica to the playing area, so as to guarantee an ideal compromise between the effectiveness of the firearm and the safety of yourself and other players.
The replica has been fully adapted to work with lipo and life type batteries.
With a basic muzzle velocity of ~380 fps ensured by the pre-installed mainspring, the replica is perfectly suited for medium-range operations.
Also included is an m90-type spring, which allows the muzzle velocity to be reduced to ~310 fps, making the replica perfectly suited for close-range or indoor operations.
The gearbox hides 8mm plain bearings and supported steel gears.
The system is secured by four anti-reversal ratchets.
The lightweight polycarbonate piston features a full steel rod for added strength. A steel cutting lever and precision rotating hop-up chamber are also used here.
The strength of the components allows them to work with m140 springs.
The finely constructed rotating hop-up chamber fits perfectly into the high-quality 6.03mm precision barrel.
Using a precision barrel positively affects the range and accuracy of the replica.
It is important to remember to use high quality 6mm ammunition.
The replica is equipped with an M-LOK front slide, produced under license from Strike Industries.
The replica also features the latest M-LOK angled grip designed by Specna Arms.
A folding front sight has been mounted on the upper slide of the RIS, which does not interfere with optoelectronic aiming devices.
Thanks to the sliding stock finished with a non-slip foot with break, it is possible to adjust the length of the replica according to the body and preferences of the shooter.
battery compartment in the football tube
Deans connector with mini-tamiya adapter included

length 655mm - 735mm
weight 2280g

Specna Arms Introduces Core™ Line with Hal™ Chip
The trigger control system supports the performance of the replica and allows for easy programming of functions via the trigger and selector.

Features of the hal™ chip:
- trigger detection based on magnetic sensors and hall effect
- active brake
- binary trigger
- adjustable trigger sensitivity (5 levels from 20 to 100%)
- adjustable pre-cocking (6 levels)
- programmable auto firing mode (automatic, semi, 3-round burst, 5-round burst)
- semi-programmable firing mode (semi, binary, aug, sniper)
- easy programming via trigger
- low battery alarm
- compatible with brushless motors
**Automatic function fires a 3-round burst first, then in full auto mode.