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Swiss Arms FN 509 Civillian - 4.5mm BB Air Pistol
If you are considering buying a firearm / airgun / knife for home delivery please ensure you have read our delivery procedures and that you will be available at the delivery address to sign for the item(s).
If you are a resident of Scotland, you must hold a valid Air Weapon Certificate (AWC) to legally purchase, possess, or use most airguns. Read more here
Please note you will need PHOTO ID for this product. Your billing address should match the ID that you provide upon delivery - For more information check out our delivery information page. This product is 18+ only.
Product Description
Now offering FREE DELIVERY on all orders of £250!
Remember we deliver air rifles & pistols straight to your door!
The FN Herstal 509 CO₂ Blowback Air Pistol delivers a perfect balance of realism, performance, and precision, making it an ideal choice for collectors and shooters alike. Fully licensed by FN Herstal, this replica faithfully reproduces the look and feel of the real FN 509 — from the authentic trademarks to its ergonomic, ambidextrous controls and combat-ready design.
Constructed with a durable aluminium alloy slide and a reinforced polymer frame, the FN 509 combines strength with lightweight handling. The gas blowback system delivers a crisp, realistic recoil, while the adjustable hop-up system ensures consistent accuracy with every shot. Its tri-dot combat sights allow for fast and intuitive target acquisition, whether on the range or during action-style shooting practice.
The pistol fires 4.5mm steel BBs at velocities of up to 315 FPS, powered by standard CO₂ cartridges for dependable performance. A 20mm Picatinny accessory rail beneath the barrel provides mounting options for tactical lights or lasers, enhancing versatility.
Every detail — from the 17-round magazine to the textured grip and slide serrations — contributes to a highly realistic shooting experience, true to FN’s military heritage.
Key Features:
Fully licensed by FN Herstal with authentic trademarks
Durable metal slide with realistic blowback action
Adjustable hop-up for improved accuracy
Tri-dot combat sights for quick target acquisition
Ambidextrous controls for left- and right-handed shooters
20mm accessory rail for lights and lasers
Fires 4.5mm steel BBs at up to 315 FPS
17-round magazine capacity
Length: 21.9 cm | Weight: 0.8 kg
The FN Herstal 509 CO₂ Blowback Air Pistol is a premium, high-performance replica that combines authentic design, tactical practicality, and reliable shooting precision — a must-have for enthusiasts who demand both realism and quality.
Delivery to England & Wales
Here at Pellpax we offer probably the best airgun delivery service in the UK, with weekly deliveries to your door on all airguns across England and Wales and mail order deliveries on all other items. We can also offer RFD transfers to a local gun shop upon request.
We now also deliver to the Isle of Wight on the last weekend of every month.
Delivery to Scotland
Unfortunately due to recent changes in the law we can no longer deliver firearms to Scotland although we can still transfer to your local Registered Firearms Dealer. Postal orders will be sent out as normal.
Pellpax Lifetime Repairs/Warranty
In addition to the manufacturers one year warranty, Pellpax offer a FREE LIFETIME repair service that covers all gunsmith labour costs. Shipping & parts are excluded. Find out more
