Product Description

Specna Arms / Rock River Arms Licensed CORE Series M4 URX

Features

• Ultra lightweight fiberglass reinforced polymer receiver

• Licensed Rock River Arms logos

• Nylon fiber furniture

• Metal barrel assembly, flash hider, charging handle, and sling swivels

• ESA quick spring change system allows the spring to be changed without the need to disassemble your gun

• Rotary type hopup with 6.03mm tight bore barrel

• 380 fps spring pre-installed from factory, optional 310 fps (M90) spring included to reduce muzzle velocity

• Freefloat quad rail handguard

The replica is fully compatible with LiPo and LiFe batteries. Due to a base muzzle velocity of ~380 FPS provided by the main spring installed by default by the manufacturer, the replica is perfect for operating on a medium range. The set also includes an M90 spring, which allows reducing the muzzle velocity to ~310 FPS and as a result to adapt the replica for close-ranged and indoor operations.
The gearbox contains 8 mm slide bearings as well as shimmed steel gears based on them. The system is secured with four anti-reversal latches. A light, made of a polycarbonate polymer piston is equipped with a full steel strip, in order to increase its durability. Also, implemented were a type 0 cylinder and a steel circuit-breaker, as well as a precise rotary Hop-Up chamber. The durability of parts allows for the cooperation with M140 springs.
The precisely-made rotary type Hop-Up chamber perfectly fit with high quality 6,03 precision barrel. The use of precision barrel has a positive effect on the range and accuracy of the replica.

Manufacturer: Specna Arms

FPS Range: 375-390

Color: M4 URX

Package: Gun Only

Model (Type): Black

Specifications:

Length: 750mm - 840mm (Adjustable)
Weight: 2345g
Inner Barrel: TBA
Magazine Capacity: TBA
Muzzle Velocity: 310~380 FPS (Measured with 0.20g BBs)
Thread Direction: 14mm Negative
Gearbox: Ver 2 Metal, Fully Upgradeable
Motor: Long Type
Fire Modes: Semi/Full-Auto, Safety
Battery: 7.4v / 11.1v Buffer Tube LiPo Battery Recommended (Wired to rear w/ small Tamiya connector. Battery and Charger not included. We recommend using only high quality batteries and smart chargers)
Hopup: Yes, Adjustable
Package Includes: Gun, Magazine, Manual