| 摘要 |
The practice firing attachment for an automatic pistol has a cylindrical casing (7) threaded onto the end of the barrel with an outlet cross bore (25) connected to a spiral groove (21) in the outer diameter of the end section (17). The cross section of the outlet cross bore is smaller than that of the central bore (31) of the inner barrel (27). A fastening pin (37) receives axial loadings. |
