銃じゅう床しょう

noun

gunstock; stock of a gun

Refers specifically to the wooden or synthetic rear part of a long gun that is held against the shoulder.

• 猟りょう銃じゅうの銃じゅう床しょうを肩かたに当あてて狙ねらう。

  He aims with the stock of the hunting rifle against his shoulder.