Evaluation summary: post market vigilance (pmv) led an evaluation of the device.Visual and functional evaluation noted that the lock out slider block was damaged and the non-welded tip housing was damaged.The load ring was found overlapping the leaf spring.Records from each manufacturing lot are thoroughly reviewed to ensure that products are released meeting all quality release specifications at the time of manufacture.Damage to the lockout slider block is consistent with a user attempting to fire a sulu when one is not fully attached.When the block becomes jammed it can prevent the lockout cam block and sulu load link from returning to its resting state.The sulu load link connects to the "unload" button, in turn causing that to become stuck in place.Damage to unload button can be replicated through rough handling.Should new information become available, the file will be re-opened and the investigation summary will be amended as appropriate.If information is provided in the future, a supplemental report will be issued.
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