HSK 4
Tā yòng qiāngtuo qiāo le yíxià mén.
He knocked on the door with the butt of the gun.
HSK 7-9
Shìbīng yòng qiāngtuo dǐngzhù jiānbǎng miáozhǔn.
The soldier steadied the gun stock against his shoulder to aim.
HSK 7-9
Zhè zhī bùqiāng de qiāngtuo shì mùzhì de.
The stock of this rifle is made of wood.
