Engineering & Technical Division

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In this blog, I will give a brief instruction on how to change the inner barrel of the Tokyo Marui Hi-CAPA series. The same procedure also applies to 1911 series except for the removal of the recoil guide.



First remove the upper assembly by pulling the slide back and align points 1 and 2. Then push the slide catch (marked a) from the right side.




Then push back the spring recoil guide until it is free from the upper slide, then just pull the whole assembly out. Then pull out the barrel assembly through the front of the slide.



Then pull the hop chamber assembly (with the inner barrel) from the outer barrel. This is a little tricky because there is a stopper in the hop chamber that keeps the hope from sliding out. You must turn the hop assembly a little bit to the right and then push back the outer barrel.



Once get the hop assembly out, take out the two screws and you will be able to remove the inner barrel and replace it.
Take note of the position of the hop mechanism on top, make sure it is in the right position when you put everything back.



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