M4 Sharps Bros The Jack 15" Carbine Replica – Black

  • Material: Metal + polymer
  • Weight: 2625 g
  • Length: 820 - 910 mm
  • Color: Black
  • Muzzle Velocity: ~390 FPS
  • Engine: Electric
  • Manufacturer: EMG

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M4 Sharps Bros The Jack 15" Carbine Replica – Black
Manufacturer: EMG
Product code: EMG-01-025745
Very small quantity of stock
Ready to ship in 1days
Cost from 3,03 €
387,17 €
387.17 / 1pcs
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M4 Sharps Bros The Jack 15" Carbine Replica

A replica manufactured by a renowned EMG company. Thanks to a license from American Sharp Bros, a manufacturer of parts for the live firearm original, the User can feast his eyes on the authentic designation and markings on the receiver as well asmore importantly, the shape of the magazine well.

The replica’s appearance was carefully imitated according to licensed parts for the live firearm original. The replica features solutions such as an operational bolt-catch, adjustable, flip-up iron sights. The external barrel has a right-handed, 14 mm thread which boasts a flash hider.

The replica was made mainly of high-quality aluminum alloy, namely - the entire receiver, the external barrel, the stock slide, etc.  The stock and pistol grip were made of durable polymer. The replica features a telescopic stock with 5 position settings - it can be adjusted in length, which allows adapting the replica to the body type and preferences of the User. The battery is stored inside the stock slide.

Thanks to the top RIS 22 mm mounting rail and MLOK accessory rails, it is possible to attach a wide array of additional accessories such as optical sights, lighting or tactical grips. The replica is equipped with one QD tactical sling swivel - enabling the detachment with one press of a button. 

Access to the Hop-Up chamber is gained in a traditional way - after pulling back the charging handle. Features a satisfactory functional bolt-catch. The enlarged magazine release button simplifies and makes the usage of the replica more pleasant.

M4 Sharps Bros The Jack replica also has the ability to rapidly replace the spring without having to disassemble the gearbox frame. The heart of this replica consists of a reinforced, slightly modified gearbox V2, with an integrated EFCS - Electronic Firing Control System module. It controls the operation of the trigger mechanism, allowing for smooth operation and, above all, shortens the motor reaction time to a squeeze of the trigger. A standard connector cube was replaced with an electronic system. EFCS has an in-built MOSFET module. The replica is compatible with gearbox programmers by ARES.

EFCS significantly prolongs the lifetime of the mechanism, thus of the entire replica and allows to use a high-voltage battery, including LiPo. 

The replica comes with a steel Hi-Cap magazine with a capacity of up to 300 BBs.

The set does not include a battery or a charger.

The set includes:
- replica
- magazine
- cleaning rod
- User’s manual

Tech specs:
Replika karabinka M4 Sharps Bros The Jack 15" - czarna
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

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
Diameter of bearings in GB [mm]:
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).

820-910 [eng]
Inner barrel length [mm]:
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.

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.

Made of:
Metal + aluminum + plastic
Battery included:

NiCd 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.
NiMH batteries have a higher self-discharge over time and shorten the life - on the other hand, they earn about 30% more capacity.

Propulsion / Powered by:
Barrel thread type:
14mm CCW
Quick Spring Change System:

M4 Sharps Bros The Jack 15" Carbine Replica – Black - reviews

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