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FX Airguns Fill Port Cover Cap – Protect your airgun’s fill port from dirt and debris with strong, secure magnet options in various materials. Fits multiple FX models. 💰 Price: Varies by Material
Protect your FX airgun’s fill port with our Fill Port Cover Cap. It shields against dirt, moisture, and debris, helping maintain your airgun’s performance. We offer two sizes: 14.5 mm short version and 20 mm long version. Both feature a 5x2 mm magnet, ensuring the cap stays in place during use. 🎯
The longer version is designed specifically for the FX Impact, providing a perfect fit and ease of use.
The cap fits the following FX airgun models:
FX Crown
FX Impact / Impact X
FX Bobcat MK2
FX Indy
FX Independence
FX Royal / Royale
FX Gladiator MK2
FX Verminator MK2
FX Boss
We offer a variety of materials, each with unique advantages:
🟩 PLA (Polylactic Acid): Lightweight and eco-friendly. Good for general use but less durable.
⚫ Carbon: Strong and lightweight. Ideal for high-performance airguns. Resistant to impacts. 💪
🔵 PETG (Polyethylene Terephthalate Glycol): Heat-resistant and flexible. Perfect for extreme conditions.
🟦 ABS (Acrylonitrile Butadiene Styrene): Tough and impact-resistant. Best for high-use airguns like FX Impact. 🔫
🟩 ASA (Acrylonitrile Styrene Acrylate): Weather-resistant and UV-stable. Ideal for outdoor use.
⚪ Metal PLA: Metallic look with strength. Lightweight and durable. 💪
🟣 TPU (Thermoplastic Polyurethane): Flexible, impact-resistant, and scratch-resistant. Withstands extreme temperatures. Ideal for long-lasting durability. 💪
For maximum flexibility, impact resistance, and temperature tolerance, we recommend TPU.
The FX Fill Port Cover Cap keeps your airgun’s fill port clean. It protects against dirt, moisture, and debris, maintaining optimal performance. The magnetic hold ensures the cap stays in place. Whether you own an FX Crown, FX Impact, or another FX model, this cap ensures your airgun stays protected and ready for action.


We ship all orders from within the European Union and deliver worldwide via registered airmail with signature confirmation upon delivery.
Orders are dispatched within 1–7 business days.
During peak seasons, holidays, or public holidays, dispatch may be delayed by 3–10 additional business days.
Orders are dispatched within 7–10 business days.
In rare cases, processing may take up to 14 additional business days due to seasonal volume.
Recommended for orders up to €150.
Includes postal insurance: if the parcel is lost or damaged, the postal service will issue a refund.
What does “Priority Processing” mean?
Priority orders are processed before standard ones. Please note that this does not guarantee faster postal delivery, as transit times depend on the destination and postal system.
Europe / EU: 3–20 days
Worldwide: 5–30 days
*These estimates are provided by the postal service. Actual delivery times vary by destination and local postal conditions.
Shipping and handling fees are automatically calculated at checkout based on:
Package weight
Destination country
You will see the final shipping cost and available delivery options during checkout.
To ensure successful delivery:
Provide a valid email address for all order updates.
Include your mobile phone number with country code (e.g. +44 7123 456 789).
You will receive email notifications for each stage of your order.
If you don’t see these messages, please check your Spam/Junk folder or contact your email provider.
Once your order ships, a tracking number will appear in your order history.
Please use this number to track your shipment — unfortunately, SGS 3D Design cannot track parcels on your behalf.
Once dispatched, the parcel becomes the customer’s responsibility.
Please ensure:
Your delivery information is accurate and complete.
The parcel is collected within the timeframe set by your local postal or courier service.
If a parcel is not collected and is returned to the sender, the customer is responsible for all return and reshipping costs.
Reshipment will occur only after these fees are paid.
SGS 3D Design is not responsible for:
Delays caused by postal or courier services
Customs clearance procedures
Local taxes, import duties, or any additional fees charged upon delivery
At our shop, we specialize in precision 3D printing for a wide range of applications. Whether you're repairing, upgrading, or customizing – we’ve got you covered. If you can’t find a specific part in our catalog, simply contact us. We may be able to design and manufacture exactly what you need.
Replacement parts for appliances (buttons, knobs, clips, handles)
Kitchen accessories and organizers
Wall mounts, holders, brackets, or hinges
Smart home device stands or adapters
Custom furniture caps, feet, and spacers
Dashboard clips and mounts
Trim fasteners, cable guides, or cover caps
Interior hooks and holders
Custom badge/emblem holders
Air vent accessories and phone mounts
Custom fairing clips or spacers
Mirror adapters and mount extensions
Switch housings or light brackets
Tank pad templates or tool holders
Custom reel handles or extensions
Line holders, bait boxes, or lure trays
Rod holders, hook organizers, or rig boxes
Mounts and accessories for boats or kayaks
Tool holders, wall mounts, and storage trays
Battery holders or charger docks
Drill bit organizers or cable management tools
Adapters or protective covers for power tools
Raspberry Pi and Arduino enclosures
Custom project boxes and sensor mounts
Cable clips, guides, or wire combs
Stands for tablets, phones, monitors
✅ Tailor-Made: Designed to your specifications
✅ High-Quality Filaments: PLA, PETG, ABS, flexible TPU, and more
✅ Fast Turnaround: Quick design, prototyping, and shipping
✅ Affordable Solutions: Get just what you need – no minimum order
✅ Personal Support: Talk to real people who understand 3D design
Send us a sketch, photo, broken part, or just an idea — and we’ll do our best to bring it to life.
👉 Contact us today and turn your ideas into reality with custom 3D printing!