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[Set] FN 509 GBB Pistol Replika - Black [Cybergun] + Pistol Reflex Sight - Black [PCS]

The set includes the following products:

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  • Forms of delivery

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  • Technical data

    To view the technical specifications of the product included in the set, click on the name

    EAN 5904420020301
    Weight 490 g
    Replica Model FN 509 Airsoft Gun
    Color black
    Material aluminum, polymer, steel
    Fire mode single
    Magazine type Green Gas
    Warranty period 12 months
    Blowback yes
    Hop up adjustable
    Camouflage black
    Grupa kolor 10230
    Ammo .20g, .23g
    Serial number YES
    Length 200 mm
    Magazine capacity 21 BBs
    Length of internal barrel 94 mm
    Muzzle energy 0.73 J
    Muzzle velocity 280 FPS with 0.20g BBs
    Diameter of Internal barrel 6.03 mm
    Quantity in package 1 pcs
    ETU MOSFET NO
    Body material metal
    EAN 5901698481919
    Weight 70 g
    Material aluminum
    Optic glass
    Reticle pattern dot
    Lighting color red
    Length 53 mm
    Height mm 44

  • Reviews

    • - 13.07.2026 wrote:
      The screws it comes with don't work for RMR footprint, and the holes for mounting it to a actual pistol plate are way too wide and lead to movement even with screws tightened down. Otherwise it looks sturdy, but yet to test it under serious fire count, since i have all sorts of issues mounting it securely to my Sand Viper.
      Opinion rating: 0
    • - 07.07.2026 wrote:
      Not particularly happy with this, buy. The aiming point is difficult to stabilise. It’s a quite expensive red dot, the place where you put the battery also very tricky, not really happy and they recommend this item looks cool but performance wise is not the best.
      Opinion rating: 0
      Odpowiedź sklepu:
      We're sorry you're not satisfied with the product. Please contact our customer/service team. They will do their best to help.
    • - 11.02.2026 wrote:
      Upper half of the glass has a lof of glare.
      The dot becomes more of a smeared out line when in the upper galf of the glass. This makes aiming impossible unless you really take the time to aim trough the lower half of the glass.
      For this price i expected at least a clean dot overall.
      Pretty dissapointed in this purchase.
      Opinion rating: 0
      Odpowiedź sklepu:
      We are deeply sorry about this situation. Please contact our service department and complete the complaint form - https://www.taiwangun.com/claims.html
    • - 13.12.2025 wrote:
      Excellent point rouge, simple à monter et à régler.la vissée est claire ! Monté sur mon Army R615-1, avec quelques modifications !!!
      Je suis très content de ce produit !!!
      Je recommande fortement pour avoir un trijicon SRO pas cher pour faire de l'airsoft !
      Opinion rating: 0
    • - 22.11.2025 wrote:
      FN Herstal has always intrigued me with the appearance of its pistols. The FN509 is no exception, although it must be admitted that it is the most civilised in appearance and eye-catching.

      Its size is somewhere between the monstrous FNX45 and the Glock 19.
      Like its real counterpart, the replica is fully ambidextrous and has a comfortable grip despite its aggressive texturing, especially around the thumb area.
      The quality of the materials and the workmanship of the replica itself are of a high standard.
      In addition to the replica and magazine, the box contains an additional rear grip plate, a pair of low-profile sights, a collimator plate (unfortunately only RMR profile), and dedicated screws for mounting the collimator.

      To sum up, it is a well-made replica with valuable accessories included in the box, all for a really decent price.
      Highly recommended.

      P.S.
      It would be nice if TaiwanGun offered additional magazines for this replica.

      Cheers :)
      Opinion rating: 9
    • - 07.08.2023 wrote:
      This is actually a really nice pistol sight. The build quality is quite nice and despite the description saying it would not come with a battery, mine actually did.

      Pros:
      Lightweight
      Durable
      Red dot is easily bright enough for sunny outdoor fun

      Cons:
      No instructions included
      Optic can catch some glare
      Accessing battery compartment is awkward
      Adjustment isn’t the best, I couldn’t get it low enough to be on point with my gun

      Overall it’s a good optic for the money
      Opinion rating: 1
    • - 26.05.2023 wrote:
      Very good red dot high quality material, brightnes adjusment 5level it's useful either on a pistol replica as a rifle in acording with a raiser.Easy to aim the dot with bought eyes open even if sits on a pistol replica.
      Opinion rating: 0
    • - 21.12.2021 wrote:
      I received order quickly & safely.. the sight itself is worth the 54$ But know it doesn’t adjust very good. The Red dot is nice & clear.. the glass is good enough it’s nice & clear. It mounts solidly.
      Opinion rating: 0
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Safety & Usage Guidelines

Please read the following information for safe product use:
SKU: · EAN: - · [Set] FN 509 GBB Pistol Replika - Black [Cybergun] + Pistol Reflex Sight - Black [PCS] ·
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