The Madbull 6.01mm Precision Barrel is the tightest bore barrel available and the only choice for players looking for the best possible accuracy and range. Madbull have boldly gone where no company has gone before, this barrel is constructed of 7075 Aluminum. Most real gun and aircraft manufacturers utilize 6061 Aluminum, but this barrel is made of even higher grade aluminum. The characteristics of this metal are perfect for airsoft, it's strong to keep the BB on track and light so it won't add significant weight to the gun.
The bore of this barrel is so tight around the BB that even the smallest obstruction in the barrel will cause a jam when fired. This barrel is recommended ONLY for advanced/experienced players that take the responsibility to clean their barrels regularly in order to avoid jams. Airsoft GI recommends cleaning this barrel after every day of use.
For: Madbull 6.01mm Precision Inner Barrel for MK36/E90 (247mm)
Great tight bore barrel.
Bought this for my ARES, Umarex, H&K G-36c by Elite Force for a Milsim event here in Michigan in August of 2014.
Installed easily noticeably increased accuracy at range
easy to install
Not really a con for this specific item but for 6.01's in general. You have to keep the inner barrel clean. High quality BB's are typically 5.95 +/- 0.01mm and they will jam if any buildup occurs inside the barrel. I used my gun for 24 hours straight with this barrel and had no issues until the last hour to hour and half of the event. Once I cleaned my barrel at the staging/dead area I was back in the game with no issues.
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