| 摘要 |
A lockable firearm safety is incorporated into the bolt mechanism of a safety bolt to selectively block the forward motion of the hammer by either of two means: (a) preventing the trigger from moving rearward which movement would release the hammer permitting it to move forward and strike the firing pin; (b) by directly blocking the hammer from moving forward to strike the firing pin. When the safety bolt is placed in the safety position, the bolt may be locked in the safety position by means of a key. The firearm cannot be discharged until the safety bolt is unlocked and is moved to the fire position. The key is retained by the bolt unless the safety bolt is in the safety locked position.
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