Grease Gunner Posted October 13, 2019 Report Share Posted October 13, 2019 Hello All I need kind of a rare bird. Its a Weight that you put inside the bolt of a ZK383 to reduce the ROF or remove it to speed it up.Thought I would try here .If you have a complete bolt, I am interested alsoThanks!!Let me know if you have one Link to comment Share on other sites More sharing options...
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