Madbull SI Mega Fins KeyMod Airsoft Rifle Handguard Rail 11" - Black
Looking to upgrade your airsoft rifle with added reach and full tactical flexibility? The Madbull SI Mega Fins KeyMod 11" Handguard Rail is built to deliver. Developed in collaboration with Strike Industries, this 11-inch rail is ideal for mid-length AR builds, offering extended accessory space without sacrificing balance. Its slim, ergonomic design helps maintain weapon control, making it an excellent choice for both tactical training and competitive airsoft scenarios.
The rail features the innovative “Mega Fins” heat management system—internal fins that draw barrel heat away to keep performance consistent even under rapid-fire conditions. The 7-sided KeyMod system allows full-circle mounting options for foregrips, flashlights, lasers, and more, while a continuous 1913 Picatinny top rail supports your scopes or backup iron sights. Finished in a matte black coat and built from lightweight alloy, it’s rugged, reliable, and ready for action.
Features
- 11-inch KeyMod rail by Madbull & Strike Industries
- Internal “Mega Fins” cooling system
- 7-sided KeyMod layout for modular mounting
- Continuous Picatinny 1913 top rail
- Ergonomic and lightweight profile
- Matte black tactical finish
- Heat-resistant design for prolonged firing
- Fits AR-15 and M4 platforms
What you get
- Madbull SI Mega Fins 11" KeyMod Handguard
- Mounting hardware
- Installation guide
- Protective packaging
Details
- Length: 11 inches
- Material: Lightweight alloy
- Rail System: 7-sided KeyMod + continuous Picatinny rail
- Cooling: Internal Mega Fins for heat dispersion
- Compatibility: AR-15 / M4 platforms
SHIPPING Delivery Prices start from just £2.50 with free delivery on orders over £50 To the uk mainland *.
Tip - The easiest way to check the shipping cost for what you want to buy is put all of the stuff you want in to your basket. Then in your basket under the sub total there is a link for “Estimate Shipping & Tax” click this and fill in the details and it will tell you the shipping cost and if you qualify for free shipping
Free ShippingFree shipping on orders over £50 To UK Mainland (excluding some parts of scotland)
Free shipping on orders over £100 To Northern Ireland & the Republic of ireland, Scottish highlands & islands, and I.O.M
Sorry we do not offer free shipping to the Channel Islands
Free shipping is a 5 working day service* (if you order Monday you get it the next Monday)
Delivery price (Mainland UK)Royal Mail (depending on weight) (2 Days Delivery*) From £2.50
Economy (post as much as you want) (2 to 4 Days Delivery*) £4.75 Flat Rate
Express shipping (post as much as you want) (1 to 2 Days Delivery*) £5.95 Flat Rate
*Working days (Saturday and Sunday are classed as non working days)
we can arrange a Saturday delivery on request but costs £20 and you will need to call us to pay the balance after making an order.
Northern Ireland From £ 5.95
Highlands and islands From £5.95
I.O.M From £5.95
Republic of Ireland £6.95 (Flat Rate how ever big or small your order is)
Channel Islands £ 7.95 (Flat Rate how ever big or small your order is)
Delivery price (International Tracked)
(Flat Rate how ever big or small your order is)
Republic of Ireland (IRL)---- £6.95 Price Drop WAS £16
Belgium (BE)--------------- £7.95 Price Drop WAS £15
Netherlands (NL)---------- £6.95 Price Drop WAS £15
Germany (DE)-------------- £6.95 Price Drop WAS £25
Luxembourg (LUX)--------- £9.95 - NEW
France (FR)----------------- £9.95 Price Drop WAS £25
Austria (AT)---------------- £11.95 - NEW
Greece (GR)---------------- £12.95 - NEW
Sweden (SE)-------------- £14.95 - NEW
Denmark (DK)------------ £9.95 Price Drop WAS £15
Finland (FI)--------------- £15.95 - NEW
Italy (IT)------------------ £11.95 Price Drop WAS £16
Portugal (PT)------------- £11.95 Price Drop WAS £18
Poland (PL)----------------- £9.95 - NEW
Spain (ES)----------------- £12.95 Price Drop WAS £23
Sweden (SE)-------------- £11.95 Price Drop WAS £15
Slovakia (SK)------------- £11.95 - NEW
Slovenia (SL) ------------ £11.95 - NEW
Croatia (HR)-------------- £16.95 - NEW
Czech Republic (CZ)----- £10.95 - NEW
Hungary (HU)------------ £10.95 - NEW
Bulgaria (BG)------------ £14.95 - NEW
Romania (RO)------------ £13.95 - NEW
Switzerland (CH)--------- £12.95 - NEW
Turkey (TR)--------------- £17.95 NEW
Channel Islands ----------£ 7.95 Price Drop WAS £15
Why buy from us
Welcome to bbgunsuk the original and oldest bb guns shop in the uk.
we offer an awesome range of bb guns airsoft bbgunsuk for beginners to pros if you need any advice just give us a call and out sales team are ready to help.
we also have lots of bb pellets & targets ect. so whatever your need we have just about got the lot!
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