Looking at a gas gun barrel, 20" 308 M110 rifle gas, threaded barrel. They list options for Neck and Breech diameter and length. I have no Idea what I would want. It shows either 0 or 20. Can anyone enlighten me as to what this is measuring?
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I would call Krieger. You will get the correct answer there.Looking at a gas gun barrel, 20" 308 M110 rifle gas, threaded barrel. They list options for Neck and Breech diameter and length. I have no Idea what I would want. It shows either 0 or 20. Can anyone enlighten me as to what this is measuring?
