[Carbon8] Magazine Stub Wrench -S (Released at the end of January 2026)

This is a special tool for accessing the "stub" located deep inside the CO2 magazine body. This important part, called the stub, is difficult to accurately access and remove using commercially available tools, but it can be easily removed without damaging the "needle" in the center.

When replacing or installing the pads or O-rings on the magazine stub, you need to remove the stub part itself from the magazine. It is difficult to do this with a regular screwdriver, so please use a special tool.

■ Compatible models

M45 series, HELLCAT4.3, Black KItty, Stryker 9 series, CZ P09 series, STEYR L9A2

"What is a stub?"
This is the part that drills a hole at the tip of the CO2 cartridge when it is installed. It is a screw-type part and is installed at the top inside of the magazine (see the third image).
A white resin part (stub pad) is embedded around this central "needle" to maintain airtightness.
In cases such as "the needle is distorted," "the needle hole is clogged," or "the stub pad or O-ring is contaminated, deteriorated, or fallen off," the stub body must be removed before performing the work.

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