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CYMA  FB4121 | Discontinued
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  • Technical data

    Manufacturer: CYMA
    Code: FB4121
    EAN 5904420005087
    Weight 2155 g
    Replica Model AR15 / M4 / M16 Airsoft Gun
    Color black
    Material ABS, aluminum, steel
    Magazine model hi-cap
    Fire mode auto, single
    Magazine material ABS
    Accumulator included in set YES
    Accumulator type mini
    Accumulator type NiMH
    Accumulator connector type T-connerctor
    Accumulator cells type mini
    Gearbox version v.2
    Bearings type steel sliding
    Bearings diameter 8 mm
    Warranty period 12 months
    Ammo .23g, .25g
    Serial number YES
    Length 875 mm
    Magazine capacity 525 BBs
    Accumulator voltage V 8,4
    Accumulator capacitance mAh 1100
    Length of internal barrel 430 mm
    Muzzle energy 1,49 J
    Muzzle velocity 400 FPS with 0.20g BBs
    Diameter of Internal barrel 6.03 mm
  • Reviews

    • - 24.06.2025 wrote:
      Fantastisk oplevelse hos Taiwangun – høj kvalitet og suveræn service!

      Jeg har for nylig handlet hos taiwangun.com, og jeg kan med hånden på hjertet sige, at det har været en af de bedste online shoppingoplevelser, jeg har haft – især inden for airsoft. Jeg bestilte 5 AK-replikaer, og både produkterne og kundeservicen har været helt i top fra start til slut.

      Produkterne: De 5 AK’er jeg bestilte, ankom i perfekt stand og var pakket sikkert og professionelt ind. Hver eneste replika var solidt bygget, uden fejl, og med masser af detaljer. Man mærker straks, at kvaliteten er høj – både i materialer og i udførelse. Jeg har prøvet mange forskellige airsoft-våben gennem årene, og de her AK’er er absolut blandt de bedste, jeg har haft fingrene i. Der var ingen problemer med funktion eller batterier, og alt virkede som det skulle direkte ud af kassen.

      Levering og forsendelse: Jeg blev positivt overrasket over, hvor hurtigt forsendelsen gik, især med tanke på, at det er en international ordre. Jeg modtog løbende opdateringer om pakken, og hele processen var gennemsigtig og tryg. Alle 5 våben blev leveret uden skader og var pakket forsvarligt ind. Stor ros for det!

      Kundeservice: Før jeg lagde min bestilling, havde jeg nogle spørgsmål omkring specifikationerne og kompatibiliteten af enkelte dele. Jeg skrev til kundeservice og fik svar hurtigt, venligt og meget kompetent. Det er tydeligt, at taiwangun.com tager deres kunder seriøst og virkelig går op i, at man føler sig tryg og informeret gennem hele processen.

      Pris og værdi for pengene: Prismæssigt ligger Taiwangun rigtig godt – faktisk utroligt godt, når man tager kvaliteten i betragtning. Jeg sparede en del i forhold til, hvad tilsvarende modeller koster andre steder, og samtidig fik jeg produkter, der føles langt mere eksklusive. Man får virkelig meget for pengene her.

      Konklusion: Alt i alt er jeg yderst tilfreds med mit køb hos taiwangun.com. De 5 AK’er levede fuldt op til mine forventninger – ja, faktisk overgik de dem – og hele oplevelsen fra bestilling til levering har været professionel og gnidningsfri. Jeg kommer helt sikkert til at handle der igen og vil anbefale dem til alle, der går op i airsoft og ønsker kvalitet, god service og rimelige priser.

      Tusind tak for en fantastisk handel – jeg glæder mig allerede til næste gang!
      Opinion rating: 0
    • - 04.11.2024 wrote:
      Nice replica to get started with airsoft.
      Feels sturdy, shoots consistent FPS numbers and has a built in tracer unit which saves about 30-50 Euros.

      Looks like it's also a nice platform to start with and tinker with upgrading parts.

      5/5!
      Opinion rating: 0
    • - 03.08.2023 wrote:
      Verry nice gun for this price. Nice handling and sound. Also the build-in tracer is a nice thing. I highly recommend this gun. Quick delivery. Toke 1 week to get this. Only took mid cap magasins with it but thats a personal choise.
      Opinion rating: 1
    • - 16.07.2023 wrote:
      I can only recommend the cm612 as an excellent first weapon, based on the games I have only positive experiences, at first I was a little worried that I would not be able to use the weapon normally with CQB games due to its length. the gun, but it turned out to be a positive disappointment, because the length of the gun did not interfere with my game and I could shoot it very accurately, and in addition to all this, the gun can be equipped very well, the hopup tracer unit works especially well, it is simply a great first gun, in CQB game are good because its ergonomics and the handling and incredible accuracy is a huge advantage in games and on the track, and in the field you can shoot very far with it. I can only recommend
      Opinion rating: 0
    • - 16.07.2023 wrote:
      the cm.612 performs excellently in the field, it is comfortable to use, the ergonomics are also excellent, the hop up is also perfect, the hop up tracer unit also works properly, perfect for long range and very accurate, I can only recommend first weapon and the battery installation is really easy I am satisfied with it
      Opinion rating: 0
    Add review


The replica from the highly recognized series of carbines made from durable nylon fiber by one of the most popular Chinese manufacturers in the world - CYMA - is an excellent choice for airsoft enthusiasts. This rifle offers the same features as other products from this manufacturer, such as a metal gearbox and other mechanical parts. However, the use of high-quality plastic materials instead of metal components (the receiver and handguard) has allowed for a reduced price. Additionally, the replica is equipped with a MOSFET, a rotary hop-up chamber system for precise adjustments, and the chamber itself features a tracer system for illuminating BBs, which greatly facilitates shooting in dark environments or during night games. Now, every beginner player can afford to purchase their favorite rifle and start their airsoft journey with a reliable replica at a lower cost.

Ergonomic Design

The replica is equipped with a lightweight 16-inch aluminum barrel, featuring a precision inner barrel with a 6.03 mm diameter and a length of 425 mm, ensuring excellent accuracy at medium ranges. The Picatinny rail handguard, receiver, and trigger assembly are made from durable nylon, while the six-position adjustable stock allows the user to tailor the rifle's length to their individual needs. The equipment includes folding iron sights, a polymer pistol grip, and a steel magazine with a 300-round capacity, making the replica versatile and highly functional.

Reinforced Gearbox V2

This model delivers a muzzle velocity of approximately 400 fps, making it an effective tool for medium-range engagements. The internal mechanism is based on reinforced components, such as an M120 spring, steel gears mounted on 8 mm bushings, a type 0 cylinder, and a spring guide with bearings. Additionally, the replica is fully compatible with accessories and parts from other manufacturers, allowing for easy upgrades and modifications to meet specific user needs.

It is also worth highlighting that the replica features a unique serial number, enhancing its appeal as a collectible item. With a well-thought-out design, high-quality craftsmanship, and advanced technological solutions, this model is an ideal choice for both beginners and advanced players, offering reliability and versatility in any airsoft game.

Set included:
  • AR-15 replica
  • 380rd magazine
  • 8,4V 1100 mAh battery
  • Battery charger

Products recommended by us matching replica:

Every replica pass initial check up. It's being checked and overshooted on XCORTECH X3200 chronograph.


Safety & Usage Guidelines

Please read the following information for safe product use:
SKU: FB4121 · EAN: 5904420005087 · CM.612 Hop-Up Tracer Unit - Black [CYMA] ·
Report safety issue · Responsible person & manufacturer
Responsible person & manufacturer
Responsible person for product placed on the EU market:
KRAKMAN P. Kiepura, K. Michalik sp.k. · Pollanki 18, 30-740 Krakow, Poland · [email protected]
Manufacturer:

REPLICAS AVAILABLE ON TAIWANGUN.COM MIGHT BE PURCHASED ONLY BY ADULT USERS. PRODUCTS FOR ASG AND MILSIM USE ONLY.

Questions? We are happy to help. Call +48 123626134 or email us via [email protected]
* All prices including VAT without transport costs