There is a bolt that the bit flips back on or pivots on. It squeezes the gap. Loosen it a little. Sometimes mine gets too loose and it won’t snap shut so I tighten it a hair, but sometimes I over tighten it and it is as you described. I think I’m describing that bolt correctly. Don’t have it in front of me.
Yup know what you mean. Have taken the bolt totally out and still can’t get the barrel to flip forward without using something to pull / pry it. I have to get the entire slot widened
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