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

The Cybergun FN 509 is a solid choice. The materials are strong and the internals are metal, but I had two minor issues with the gun worth pointing out.

The cover plate screw is extremely tight — it prevents swapping the sights or adding a red dot.

The small backstrap has a slightly loose pin, which does not affect function whatsoever.

That being said, the gun offers excellent value for money. 4/5 stars.

Very good for the price, although adjusting the hop-up is a bit tricky. Good performance right out of the box. The box is well-stocked with plenty of accessories, and installing an RMR is easy. A small tactical light and a tracer complete the look.

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.

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.

For the price this pistol is a no-brainer.

This is my first sidearm, it's not a glock or hi-capa, but a very unique gun you rarely see on the field. It has a nice finish, it doesn't say it's Cerakote but the FDE slide does look like it matches the Magpul FDE Cerakote color, looks great in person.

It has a heavier slide so it cycles slower than other pistols but has more kick.

Note: no plate for mounting an ACRO you have to 3D print one.

Feels great in hand and has a strong, satisfying recoil! Build quality is solid, accuracy is good for a stock GBB, and the licensed markings look amazing. The main downside is limited aftermarket support and somewhat fragile mags, but overall it’s a very fun and stylish sidearm.

If you’re looking for a sidearm that blends tactical realism with solid performance, the FN 509 GBB is undoubtedly one of the best options on the market today. The first thing you’ll notice is its extreme fidelity to the real firearm; the frame’s polymer, the grip texturing, and the overall weight are so well-executed that you might forget you’re holding a replica.

What truly sets it apart from the competition is its "out of the box" versatility. It comes fully prepared for modern engagements:

Optics Ready: It allows you to mount a red dot directly onto the slide without the need for complicated external adapters.

Threaded Barrel: The outer barrel is already prepared to attach a suppressor or tracer unit, giving it a commanding and functional aesthetic from day one.

On the field, the blowback is crisp and powerful, offering a very satisfying shooting experience. However, it’s not without its flaws: loading the magazine is notably slow. The design of the feed lips or the spring can be a bit cumbersome in the heat of a frantic skirmish, making spare magazines an absolute necessity.

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.

Hellou so i have video pm this gun on my YouTube channel whisky_airsoft is it in Slovak language but subtitles may help, i think its first glock type gun which works well in cold, add black gas and store it in freezer and you good to go, About upgrade i instal crazy jet 91mm maple leaf and sniper mechanics flamingo hop up rubber 50, to shoot .40g bbs you must add little tape to hop up because original hop arm is weak but like i said Nothing what tape didnt make

The FN 509 GBB is a really solid replica for its price point (130 euros as of right now). It has a solid, realistic feel with comfortable ergonomics and smooth handling.

Pros: Fully ambidextrous controls (mag and slide release on both sides); Suppressor-ready threaded barrel; Red-dot optic ready out of the box; Picatiny rail that can be used to attach any acessories you might need

Cons: Its mag ( Its a closed type, so loading it will become a nightmare, also mine does not want to hold any more bb than 17, which isnt that low but could be better)

Took it out to a game with -5 celisus weather and snow, and it preformed pretty well with some red gas. Overall its a good replica, even for a beginner if you have the budget for it. The FN licensing helps it look pretty realistic, so putting it out as a decoration on a shelf is also an option.

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 !

Great design, feels good in hand , i've not try yet on shooting,i bought just for collection.
Highly recommend to people who really wanna have a great airsoft pistol ,and for playing to.
Feels good quality and very satisfied with this kind of airsoft.

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

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.

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.