| 摘要 |
PROBLEM TO BE SOLVED: To obtain a structure for fixing the stock of a rifle in which the stock can be coupled with a frame for holding the engine section of a rifle or separated therefrom by one step and the holding mechanism of lock pin is simplified. SOLUTION: Holding holes 15, 16 for a lock pin 14 are made respectively in the frame for holding the engine section of a rifle and the stock 3 and the lock pin is locked in these holding holes. In such a structure for fixing the stock of a rifle, the holding hole in any one of the frame or the stock 3 is opened in the direction for separating them and a plug 19 is fixed in the opening such that it can be opened or closed freely.
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