| 摘要 |
A sleeve (13) made of spring plate is positioned between the mushroom head ( 1) and The breechblock carrier (23) of a locked firearm, the sleeve being supported in the expanded state between the mushroom head (1) and the breechblock carrier (23) and thu s preventing their being pushed together. During closure of the breechblock (1, 23), the sleeve (13) enters a fixed co ne (31), which compresses it radially in elastic fashion so that it can be inserted i nto an annular space in the mushroom head (1) and/or breechblock carrier (23) and thus permits th eir pushing together.
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