M4 M-Lok Core SA-C09 Bi-Ton (Specna Arms)

M4 Core SA-C09 M-Lok Bi-Ton (Specna Arms)

The replica includes an ESA ™ quick-change spring system. Thanks to this system, it is possible to quickly adapt the power of the replica to the conditions expected on the playing field without needing access to a workshop or a set of special tools - simply remove the stock tube to access the spring so that it can be removed without having to remove or dismantle the gearbox.

The replica is fully compatible with LiPo and LiFe batteries. With a base power of around 380 Fps provided by the main spring installed by default by the manufacturer, the replica is perfect for standard operation. The kit also includes an M90 spring, which reduces the initial velocity to around 310 Fps or 1 Joule, making the replica suitable for short-range and indoor (CQB) operations.

The geabox contains 8mm bearings (bushing) and steel gears. The polycarbonate piston is fitted with steel teeth to increase its durability. A type 0 cylinder and a steel contactor have also been used, as well as a precision rotating Hop-Up chamber. The durability of the parts means that springs up to M140 can be used.

The high-precision rotary Hop-Up chamber fits perfectly into the 6.03mm precision barrel. The use of a precision barrel has a positive effect on the range and accuracy of the replica.

The replica is equipped with a 22mm RIS top rail (Airsoft standard) and an adjustable stock. The top RIS rail has a rear sight. Thanks to the extendable stock with non-slip grip, the length of the replica can be adapted to the body type and preferences of the user. A standard flash hider is based on a 14mm left-hand thread, allowing a silencer to be fitted in its place.

The kit includes :

- replica
- magazine
- metal sight
- additional main spring