| 摘要 |
The safety device (100), made from a metal and preferably steel, consists of a cylindrical bar (105) that can be inserted lengthwise into a tubular component of a firearm, such as the barrel or breech, occupying sufficient volume to prevent the firearm from being used. It has a catch (117) at one end and a lock (109, 113) at the other, operated by a key (111).
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