R8-15 Maruzen CA870 Carbon Straight Outer Barrel Ver.2

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This listing is for a Maruzen CA870 genuine carbon outer barrel and shell tube cap.

Outer Barrel: 3K Carbon Fiber
Outer Diameter 29mm, Inner Diameter 27mm
Muzzle Part: POM Resin
Shell Tube Cap: POM Resin
Barrel Base: POM Resin
Barrel Stay: Epoxy Resin

*POM (Polyacetal): A material with excellent strength and durability.

Each part is machined using a lathe and milling machine.
The muzzle part's inner diameter is set to match the outer diameter of the genuine barrel, which holds the inner barrel centered. This improves shot grouping.
Additionally, a 11mm positive thread (female) is cut using a lathe.
By attaching an aftermarket 11mm positive thread to 14mm reverse thread adapter (approx. 800 yen), suppressors and tracers can be attached.
The muzzle part is fixed using heat shrinkage. It is fixed very securely and cannot be removed by hand. To remove it, cool it in a freezer (approx. -18°C) for about 20 minutes. It will come off due to heat shrinkage. When attaching, also cool it before installation.
For fine adjustment of the barrel position, move the barrel base.

Images 8-15 show the items for sale.

By using the CA870 Carbon Outer Barrel Inner Barrel Spacer & Sound Absorbing Sponge listed separately, you can create an integrated suppressor.
In that case, cut the inner barrel by about 70mm and install the Non-Baiin 0.9J. This will result in a muzzle velocity similar to the genuine product.
When combined with Ikkaku, the firing sound will be significantly quieter with the high frequencies cut.
This is a recommended customization.

[Notes]
* Made to fit Maruzen genuine inner barrel (outer diameter 8mm).
Cannot be installed if you have changed to an aftermarket inner barrel (outer diameter 8.55mm) or similar.
* Made based on the genuine inner barrel length.
* Can be installed as is (plug and play).
* The genuine shell tube cap cannot be used. Please install the included one.
* For those who can disassemble and reassemble the CA870 themselves.
* Please refrain from price negotiations.
* No returns, refunds, or exchanges.
* Unauthorized use of images is prohibited.
* Please provide receipt confirmation within 24 hours of receiving the item. If this is difficult, please contact us in advance.