Strike Planet got this good review of the Arcturus AR15 MUR MOD B Carbine Ambi LITE that they have available at their store... "The Arcturus MUR MOD B Carbine Ambi AEG LITE assault rifle is an airsoft variation of the American M4.

It is lightweight (about 2.3 kg), which is provided by nylon (lighter and stronger than plastic). The receiver, handle and stock are made of it. The forearm, DTK, barrel and butt tube are made of metal. All this makes the machine more mobile and easy to use. The drive comes with a ramrod, a branded cup holder, a stopper on the forend (makes the grip more comfortable), a butt plug, a bunker magazine, an adapter for a mini tamiya connector, instructions, a sighting device, a wristband and a set of hexes.

The AEG uses an M-lok handguard for mounting an additional body kit and a picatinny rail. Regular sights (folding) are installed on it, however, they can be replaced with a collimator or optical sight. The telescopic buttstock provides the ability to adjust the length (810/725).

Such dimensions make the airsoft machine effective for fighting in buildings. Out of the box, the AEG is equipped with a 320-BB round magazine. A T-connector is used to connect the battery (provides better (in comparison with other connectors) performance and longer service life). Arcturus MUR MOD B Carbine is an excellent choice for those who prefer high quality and portability combined with room for further improvements. The silver wiring and soft trigger will greatly increase the actuation speed and give you an advantage during games. Such dimensions make the airsoft machine effective for fighting in buildings."