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MadBull Ver. 2 Precision Inner Barrel 509mm 6.03mm for Metal Gearbox Airsoft AEG ( M16, M249, AUG )
Madbull Upgraded Black Python 509mm 6.03mm Inner Barrel for Metal Gearbox Airsoft AEG ( MC51 )

Price: $33.50

Availability:: Usually Ships in 24 to 48 Hours
Product Code: MB-BARL-509MM




  • Material: Aluminum w/ Black Hard Coating
  • Length: 509mm
  • Diameter: 6.03mm
  • Used In M16 / AUG / M249
  • Hard Coated for Improved Smoothness
  • Tight Bore Barrel Upgrade
  • Improves Accuracy & Range
  • Can Increase FPS
  • Cut for Standard Hopup Chambers and M14 Hopup Chambers
  • Precision Made


The MadBull Black Python 509mm Tight Bore 6.03mm AEG airsoft barrel was designed for use in M249, M16 and AUG metal gearbox AEG. Airsoft AEG barrels will fit into any metal gearbox AEG that uses a standard hopup design (Any Version) but using a longer barrel than stock may also require the use of the mock suppressor to protect the barrel if it sticks out of the end of the gun. Madbull Barrels are made of high grade aluminum with a unique hard coating that provides improved surface qualities and results in greater performance and improved durability. Tight bore barrels also require the use of ultra high grade BB's to prevent jamming and damage such as UAP, Madbull, Bioval, and various others. Each Madbull barrel is quality tested by Madbull to ensure that you only receive products of the highest quality. Switching to a tight bore barrel will provide greater accuracy, range and depending on your existing gearbox build may increase the FPS (Specifically when using Type 0 cylinders with longer barrels).

Warning: We at AirRattle.com recommend all upgrade / repair parts are installed by a professional as additional upgrades and/or custom fitting may be required. It is the responsibility of the customer to ensure the part is compatible with their gun prior to purchase. We are not responsible for any damage caused during or after installation and are installed at customer�s discretion.

Warning: Tight Bore barrels require the use of ultra high grade BB's like the ones suggested below. Using lower quality BB's can cause jamming and damage to your AEG.
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Average Customer Review: Average Customer Review: 5 of 5 5 of 5 Total Reviews: 1 Write a review.

  0 of 0 people found the following review helpful:
5 of 5 As expected January 20, 2016
Reviewer: Chris Businsky from Bel Air, MD United States  
as expected

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