BI-3981M assault rifle replica
The BI-3981M replica is made of metal and plastic. The SF type stock, the
pistol grip and the RIS rail cover panel are made of plastic. On the other
hand, the elements such as the replica’s body, the outer barrel and the
gas-pipe replica, the RIS rail system, the adjustable cocking handle, the
hop-up chamber, the tactical sling attachment point, the magazine, the stock’s
pipe are made of metal. The carbine is also equipped with an adjustable hop-up
system to which we gain access by pulling back the cocking handle and which
opens the dust covers under which the adjustment knob is situated.
The set includes:
- a replica,
- a magazine,
- a battery,
- a charger,
- a tactical grip,
- a one point tactical sling,
It is the spped of bb, while its leaving the innerbarrel of replica. This speed is measured in FPS (Feet Per Second).
1 FPS = 0,3 m/s
1 J = 99 m/s
1 J = 326,7 FPS
|Propulsion / Powered by:|
Indications v2, v3, v6 does not mean the level of advance, but only shape of gearbox skeleton which was used and selected by the manufacturer depending on the capabilities of the body of the replica. For example, a models of the M4/M16 family, MP5, have a v2 gearbox, while the AK family have gearbox v3.
|Type of fire:|
Metal + plastic
The length of the replca is measured between the two most distant points of each other. Different models have several of these values, because of its design allows to increase or decrease it length (eg. folding stock or extended flash hider).
715 / 795
|Inner barrel length [mm]:|
This is a value that includes the weight of the replica, magazine and other accessories that are include in set without a battery, charger, cleaning rod, etc., etc.
|Battery Voltage [V]:|
|Battery Capacity [mAh]:|
Battery capacity determines the time, which it accumulated enough energy to work gearbox. The greater capacity, then replica will shoot longer.
rechargeable battery is characterized by high efficiency
current-carrying capacity, but there are disruptive effect on memory.
Should be unloaded and loaded in the full cycle, ie, it is recommended
to fully discharge, and after unloading must charge the battery
immediately without leaving it for a long time in a discharged state.
|Magazine capacity [pcs]:|
Hop-Up system is used for overclocking bb during the shot (putting it in rotation), through which, it extends its flight path. Acting laws of physics make that bb lift up, while the gravitational force take it down. Appropriate adjustment of Hop-Up, will compensate for these two factors, which result in long and straight flight for longer distance and be greater focus shot (to improve accuracy).
Blow back is a simulation system of the cocking lever - it imitates the work of it as the equivalent sharp. This system raises the realism and adds a lot more experience during shooting.