The replica was made of metal and plastic. The elements such as the replica’s body, the outer barrel, the gas pipe dummy, the carrying handle, the cocking handle, the hop-up chamber, the magazine or the stock’s pipe are made of metal whiles as the plastic made parts are the stock, the pistol grip and the front grip which is also the barrel guard. There is a place for the battery for under the barrel guard.
The carbine is equipped with a hop-up system that significantly increase the replica’s efficiency. We can access the hop-up system by pulling the cocking handle which open the dust cover and hides the adjustment knob. In this model’s gearbox that is made of metal there are 7mm ball bearings and a delayer.
The BI-3681M has got a removable carrying handle which holds a 22mm RIS rail. It is possible to attach a RIS standard scope or red dot sight after you remove the carrying handle. It is also equipped with a multi-position stock which’s length may be adjusted to the individual needs and built of the shooter.
The set includes:
- the replica,
- a magazine,
- a battery,
- a charger