Madbull Airsoft SteelBull 6.03mm Tight Bore Inner Barrel

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Length: 229mm
$35 $40
Only 2 units left


When looking to increase the performance of your AEG, a tight bore barrel is one of the best places to start. Most AEGs come stock with an inner barrels with a relatively large inner diameter. Replacing this barrel with a tight bore barrel, with a diameter of 6.03mm or smaller, will help to improve your gun’s accuracy and shot grouping. As an added benefit, the tighter diameter of a TBB restricts the air flow better, increasing FPS by a small amount.

Made with stainless steel, this inner barrel from Madbull Airsoft SteelBull is a high quality, affordable upgrade piece for any airsoft gun. Its 6.03mm diameter increases BB stability and accuracy. The inner barrel is designed to be a lot more durable than standard / stock barrels and dramatically increase the performance of any AEG.


  • High strength stainless steel construction
  • Diameter: 6.03mm
  • Stainless steel construction for enhanced durability and performance
  • 6.03mm diameter provides better seal around BB slightly boosts FPS
  • Increase range, accuracy, stability and consistency
  • Designed to produce tighter groupings at range

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