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Madbull KX5 Amplifier

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Free Shipping over $150 ($9.99 for orders under $150)

Fox Airsoft offers a 30 day warranty and return policy.

About the Madbull KX5 Amplifier

The Madbull KX5 Amplifier is a muzzle device that will amplify the sound of your airsoft gun.

How does it work? The conical shape directs the noise more outward to your intended target rather than all over the place as the noise/air exits the barrel. This sound by many accounts is much louder than the report from a normal AEG and can often make your gun sound much more intimidating to the opposing players. It's a really slick upgrade to your normal flash hider with a dash of function. These are available in both the more popular counter-clockwise 14mm threading as well as clockwise (great news for those with Elite Force Competition M4's). To preserve the function of the amplifier you must run a stock length barrel rather than extending any of it into the flash hider. These amplifiers are available in both +14mm and -14mm thread. If you are uncertain about which one you need for your gun, contact us and we can help you figure it out by calling (888)316-7816 or e-mailing us at with a clear description of the gun that you have.

The real KX5 is designed to be a muzzle device that increases back pressure in the gas system to make short barreled guns run more reliably and smoothly. Though its secondary function is that of a flash hider, due to its internal cone shape, it directs the blast forward more than anything which earns it the nickname "flaming pig". The KX5 is an evolved version of the original KX3 which was wider. The new slim profile of the KX5 allows it to fit inside many handguards for a more pleasing aesthetic. The diameter of the KX5 is roughly 1.25 inches so check your handguards internal diameter to make sure this will fit. Although its original design was for intended use with shorter barreled guns, the KX5 and KX3 would function fine with any length rifle.

Madbull is a high end manufacturer of parts and accessories for airsoft guns, many of which we run in our own personal rifles. They work in partnership to produced licensed replica from many famous brands including Noveske, Troy, Daniel Defense, and more. If you are looking for ultra realistic accessories then look no further than Madbull.

Q: Is replacing my orange tip legal?

A: Replacing your orange tip on your airsoft gun may or may not be legal depending on your local laws. Check with local authorities first before proceeding. Many places do not require it but guns imported into the US are required the orange tip by customs. With or without the orange tip, you should still treat airsoft guns responsibly and play with them only on private property or on an airsoft field, not out in the public.

What's Included in the Box:

  • 1 x Madbull KX5 Amplifier

Quick Overview:

  • Available in -14mm and +14mm CW Threads
  • Noise Amplifying Design
  • "Fire Pig" logo and licensed Noveske Trademarks
  • 3.25" x 1.25"
  • Clears many rail systems
  • Aluminum construction



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— Customers Testimonial —

Honestly, this is the only airsoft shop I will ever buy from. Their guns are always quality. Their custom work is mind blowing. Their staff is not only helpful, but always happy to help. If you are just starting out or have been playing for years, these guys have guns, gear, and good advice for every situation.
— R. King
Awesome company and products. Received sooner than projected from Colorado and I'm in California. Less than 2 days from placing order to receiving it. . Everything shipped as ordered . Incredible selection and great price... Did my homework and eventually came back to them. I'm glad I did. My squad will be ordering and I be ordering more gear as well.
— John
Great people great place I've ordered a few small things. Delivery was on time both times great items. Yesterday I checked my mail they sent me a fox airsoft patch just to say thanks and to me that's a way to do bussiness. Fox y'all have got business keep up the good work.
— Matt
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