BI-3381M carbine replica

  • Length: 700 - 780 mm
  • Weight: 3000 g
  • Material: metal and plastic
  • Initial muzzle velocity: ~350 FPS
  • Manufacturer: Boyi

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BI-3381M carbine replica
Manufacturer: BOYI/DBOYS
Product code: DBY-01-000136
Rating5/55.00 / 5 (9 reviews)
Small quantity of stock
Ready to ship in 2days
Cost from €1,60
125.47 / 1pcs
You save 23% (€37,48).
In stock
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BI-3381M carbine replica

A replica made out of a zinc-aluminium alloy and high quality, durable plastic. The elements such as the replica's receiver, outer barrel, stockpipe, all RIS rails and most minor elements have been made out of metal. What's worth noting, the hop-up chamber was also made of metal. Other outer elements, such as the SF-type stock and the pistol grip, ahve been made out of plastic.

The replica is equipped with a regulated hop-up system which allows for much more precise shooting. It's easily accessed by pulling away the t-lever, thus opening up the dummy chamber and revealing the regulation mechanism. The replica's v2 gearbox was made out of metal and has been equipped with a durable ABS piston and metal torques set on 7 mm bearings.

The barrel ends with a silencer, and the whole replica is covered with RIS rails allowing for attachment of various additional equipment, eg. a red dot sight, scope, tactical foregrip or laser target marker compatible with the RIS standards. The replica is also equipped with a retractable stock allowing to fit it to the shooter's personal needs and build. 


The set includes:

- the replica
- a magazine
- a battery
- a charger
- a tactical foregrip
- a three-point sling

Tech specs:
12 months
Velocity [FPS]:

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:
Gearbox version:

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.

v2 Gearbox
Type of fire:
Single, auto
Made of:
Metal + plastic
Lenght [mm]:

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).

780 / 860
Weight [g]:

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.

Magazine type:
Hi-Cap magazine
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).

Yes, adjustable
Blow Back:

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.

Users reviews
Number of reviews: 9 Average rating: 5.00
Rate: Rate: 5
Good entry level weapon, played my first skirm with this and performed well. I did replace the short spring with an M100 and changed the plastic parts with metal parts. So that the fps will not drop as fast. The hop-up and airnozzle will break or get cracks. Replace them as soon as possible with metal parts. Then it will shoot with the M100 spring from 360 (hop-up closed) to ~380 (hop-up open). And get a good tactical sling because this beast is heavy after a few hours of gameplay.
Rate: Rate: 5
Great replica!
Rate: Rate: 5
Great gun for the price, I recommend it.
Rate: Rate: 5
Feel very strong and heavy. Great quality. Magazine drops out quicly when button pressed and you must push it in hard to let it catch it good. Also comes with a 3 points black sling/
Rate: Rate: 5
This is a beautiful replica, straight out of call of duty modern warfare 2. It has a charm to the other type of m4 more jealous of it is playable out of the box.
Rate: Rate: 5
This full metal replica has a very good quality/price ratio. It's heavy and feels rock solid!
The only cons I could find is that the stock has a little wobble and the magazine should be put in carefully, it is a little too small for the magazine well.
Mine came with a M100 spring pre-installed by gunfire, it shoot 336fps steady.
Rate: Rate: 5
I like this replica,it works fine and the rate price/quality is very good.
Rate: Rate: 5
Good product! good replica to start!
Rate: Rate: 5
Very nice gun to start with! Good quality! A+ Set also includes a sling (not mentioned in discription)
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