Technical term for the part of a rifle that extracts a spent cartridge case from the chamber.
抽筒子が故障すると、薬莢が排出されない。
If the extractor malfunctions, the cartridge case won't be ejected.
Compound of 抽 (extract), 筒 (cylinder/barrel), and 子 (small thing/component). The exact historical derivation is uncertain; the spelling is conventionally associated with the firearm part.