Madbull is one of the top manufacturers in the airsoft industry, they are world renowned for their high quality products and their tight bore precision inner barrels are no exception. The Madbull Version 2 Precision inner barrel features a 6.03mm diameter for increased range, accuracy, and in some cases increased muzzle velocity.
For: MadBull Ver. 2 Precision Inner Barrel FSG1 Plus Length for FSG1 Hop Up
this inner barrel is 26 inches long for those of you who can't convert mm to inches. i put it in my jg ak-47 with a 8.25 inch outer barrel extension. it comes right to the tip of the silencer, maybe 0.2 inches from the tip, its a tight fit but it works. also, it completely changes how the hop up affects the bb. turning the hop up too high will cause the bb to drop early because it will spin up too early and ride the top of the inner barrel. but if you adjust the hop up right it makes the gun amazing. the grouping is tight, maybe a 8 inch diameter at 200 feet.
perfect for ak47 with a long outer barrel extension
6.03mm bore, less jamming issues that 6.01
had to find a 26 inch unjamming/cleaning rod. but that's not a problem
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