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Angel Custom G2 SUS304 Stainless Steel Precision 6.03mm Airsoft AEG Tightbore Inner Barrel (Length: 290mm)

ID: 84027 (BRL-AC03-290)
Angel Custom G2 SUS304 Stainless Steel Precision 6.03mm Airsoft AEG Tightbore Inner Barrel (Length: 290mm)
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Angel Custom



  • Improve grouping / accuracy
  • Increase power by 20~50 FPS (varies pending barrel length) and range / distance (maximum range / effective range varies pending barrel length)
  • Highest strength & durability amongst all existing Airsoft AEG barrels
  • Milled channels to secure barrel onto the hopup unit
  • Angled window for reducing wear on the hopup bucking
  • CNC milled and tapered crown
  • Individually crowned edges for improved performance
  • Crafted from high quality 100% SUS304 stainless steel
Angel Custom G2 6.03mm Inner Barrel Series are the pinnacle of quality and performance in the Airsoft industry. Utilizing advanced machining technology with premium grade materials, these inner barrels stand out in both quality and performance.

After considerable testing and R&D, SUS304 stainless steel was chosen for its qualities that it gives to the application of barrel manufacturing. Despite its higher cost and manufacturing complexity, SUS304 stainless steel provides a degree of hardness, durability and resilience to ensure the barrel retains its consistency and accuracy even after tens of thousands of rounds. Other qualities of SUS304 stainless steel is that it has natural scuff, corrosion and weather resistant qualities making it easier to maintain for years of reliability. Each barrel is crafted using precision machinery; a high polish and precision crowning provide peak performance.

Why Angel Custom?
  • SUS304 stainless steel barrels are simply better than alloy, aluminum and brass barrels
  • Angel Custom tight bore barrels are the most affordable steel 6.03mm tight bore barrels
  • Angel Custom's manufacturing capability provides industry leading accuracy and precision

  • Why 6.03mm?
    With the 5.99mm and 5.98mm BBs going extinct, and with present day match grade BBs being 5.88~5.95 for a better center of mass, 6.03mm became the new optimized bore for maximum range, grouping and accuracy. (BB Diameter Deviation Reference: Tokyo Marui / Excel (5.90+). KSC/Evike Japanese Spec. (5.88+). Matrix, WE, AIM Top, Madbull, Elite Force (5.90+).
    6.03mm barrels also provides less air volume in the barrel, resulting with less air needed from the cylinder for each projection.

    Manufacturer: Angel Custom


    Overall Length: 290mm
    Inner Diameter: 6.03mm
    Compatibility: Recommended for Amoeba AM009. All Marui Compatible AEG's and other rifles utilizing standard AEG specification inner barrels

    Material: 100% SUS304 Stainless Steel

    Compatibility / To Determining the Inner Barrel Length You Need:
    This barrel is compatible with all Tokyo Marui system AEGs. The key to choosing an optimized inner barrel is to prevent it from exposing out of your outer barrel (or flash hider and mock silencer extensions) while maximizing its length for optimized performance. Please note that the stock barrel length in your gun may not always be optimized for mass production models.

    To determine the length you need, measure from where the magazine feed the BB to the tip of your inner barrel, or where you want your inner barrel to end. Subtract ~5mm for hop-up unit. Remember, it is perfectly okay to have an inner barrel shorter than your outer barrel, or have the exposed sections hidden in a longer flash hider or mock silencer.

    Inner Barrel FAQ: If you greatly increase the inner barrel of your AEG, you may want to make sure your gearbox Cylinder is adequate. For example, if you install a 509mm inner barrel on your MP5, you may want to switch the cylinder to a full cylinder so the amount of air inside the cylinder is equivalent to your new barrel.

    About Angel Custom

    Angel Custom was founded on a mission to promote satisfaction and excitement on the Airsoft battlefield. Founded by Airsofters searching for perfections, it is our joy and pride to present you our battle tested creations. We strive to provide quality products and services that are reliable and trustworthy to be worthy of the trust placed in us.

    12 Customer Reviews

    (Write a review)

    by Bryan D. on 10/18/2023
    "love this barrel paired with a polar star jack, prommy purple, max hop up and .30g and i’m getting really good range
    by Christopher Y. on 04/28/2023
    "The best inner barrel I could've asked for! Swapped it out in my Matrix AX-15 with a Maple Leaf bucking and now it shoots lasers! Definitely worth the money.
    by Paul C. on 01/01/2023
    "Great upgrade! Took about 10 minutes to install, increased the FPS of my Cybergun M4 from 360 to 380. Max at my field is 400 so it works perfect. BBs definitely fly straighter and in a tighter line with this barrel.

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