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M4 Carbine FLEX™ GATE X-ASR (SA-F03) - Black/Tan

AEG assault rifle M4 Carbine FLEX (SA-F03) series FLEX™ from Specna Arms in Half Tan version!

It features a lightweight polymer body reinforced with nylon fibers, M-Lok handguard, and excellent internal parts from FLEX series with a performance of 110 m/s straight out of the box, Gate X-ASR mosfet, metal outer barrel, and muzzle brake.

FLEX is your Choice!

141,81 € tax incl.

Availability: In Stock

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SPARMS186-TAN

: Specna Arms

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Varianty produktů

  • 141,81 € In Stock

    : Specna Arms

    SPARMS186-BK

    AEG assault rifle M4 Carbine FLEX (SA-F03) series FLEX™ from Specna Arms in black version! It features a lightweight polymer body reinforced with nylon fibers, M-Lok handguard, and excellent internal parts from FLEX series with a performance of 110 m/s straight out of the box, Gate X-ASR mosfet, metal outer barrel, and muzzle brake. FLEX is your Choice!

    141,81 €
    Out of stock

The classic AR15 (M4/16) based rifle from Specna Arms is a favorite among many airsoft and FPS game players. It not only impresses with the iconic design of the famous assault rifle but also with the configuration of internal parts that offer unmatched performance and reliability.
This rifle is appreciated by both beginners and experienced players. The manufacturer, Specna Arms, is a popular brand among players, consistently ranking among the most favored weapons in the airsoft world.
From the beginning, it offers quality at a great price and has perfect potential for future performance upgrades.
In simple terms: just buy, unpack, load the magazine, and start playing!

The replica is equipped with the MOSFET X-ASR module from the Polish company GATE. This module ensures safe switching, protects internal parts, improves trigger response, extends battery life, increases the rate of fire, and allows the use of Li-Pol batteries 7.4V and 11.1V. The integrated status diodes diagnose basic weapon malfunctions.
Each Flex series rifle from Specna Arms comes with a main 6.03mm barrel for increased accuracy. Additionally, it features the increasingly common QSC system, allowing you to install a stronger/weaker spring according to your preference. The spring can be replaced without the need for special tools – all through the stock tube, without pulling or disassembling the gearbox.
The gearbox is also reinforced and includes above-standard internal parts, capable of working with springs up to M120 (as stated by the manufacturer Specna Arms in the description of FLEX/Core series gearboxes).

Why choose Specna Arms FLEX series?

  • High-quality polymer body reinforced with nylon fibers - lightweight, durable, and stronger than most alloy bodies on the market
  • Crane stock for placing multi-part batteries
  • Gearbox V2 with QSC system ESA through the stock
  • Mosfet X-ASR 4th generation with polarity protection and increasing the rate of fire with T-DEAN connector in the stock
  • Reinforced polymer piston with all steel teeth
  • 8mm ball bearings for fast operation
  • Set of gears with a ratio of 18:1
  • Polymer rotary hop-up chamber
  • Precise barrel with a diameter of 6.03mm

The FLEX series is essentially the sibling of the CORE series, differing from the EDGE/EDGE2.0 and ONE series by having plastic external parts instead of metal ones. However, it is a durable polymer reinforced with nylon fibers (found in weapons like G36, P90 for many years). This combination of materials withstands normal handling of the weapon during airsoft (including accidental drops, impacts on obstacles/posts, etc.), as the low weight of the weapon also reduces the energy of falls and impacts.
Moreover, not all plastic is created equal to all metal alloys; some Chinese metal powder alloy has, in practice, less durability than reinforced plastic bodies. Additionally, it is possible to replace plastic parts over time with CNC metal parts from Specna Arms.
The M-Lok handguard allows the attachment of various accessories. The ergonomic design and construction ensure a comfortable grip and easy operation. With an adjustable stock, this replica is ready for diverse gaming situations.
Overall, this is a rifle that combines attractive design, low weight, and a great price for maximum enjoyment.


Plastic parts of the FLEX series body are:

  • body
  • stock tube
  • handguard
  • stock, buttstock, and sights like the Edge series

Metal parts:

  • outer barrel with thread for 14mm- muzzle device
  • muzzle brake
  • charging handle for access to the hop-up
  • screws, pins, and small body parts are even made of steel

In the Package, you will find:

  • Rifle
  • 300 BBs magazine (rotary)
  • Foldable sights
  • Replacement weaker spring (M90) for CQB
  • Specna Arms promotional stickers
  • User manual

*** We can solder the connector to another one upon request. Just write the request in the order notes. ***

ColorHalf Tan
Muzzle velocity (m/s)110 (m/s)
Recommended weight of ammunition0,25g - 0,28g
Thread (mm)14- (mm)
Outer length MINIMAL (mm)710 (mm)
Outer length MAXIMAL (mm)790 (mm)
Inner barrel length (mm)280 (mm)
Weight (g)2220 (g)
Body/receiver materialABS / Plastic
Gearbox versionV2 - ESA™
Amount of piston teeth14
Bearings (mm)8 (mm)
Bearings (material)Metal
Hlava pístuPlastic
NozzlePlastic
Spring guideMetal
Hop-Up chamber materialPlastic
Connector typeSmall Tamyia
Magazine materialPlastic
High-cap / Mid-capHigh-cap
Magazine capacity300
Processor unitYES
BlowbackNO
Battery includedNO
Battery ChargerNO
  Specna Arms SA-F03