Board Thread:Questions and answers/@comment-33092097-20190830191912/@comment-30049823-20190830200905

I'm having trouble forming a mental picture of what you mean by "dart tooth", if the problem is that it won't disengage.

I bought a Mediator in a state that was similar to what you described; several darts jammed into the barrel and breech.

After clearing it out, the wedge-shaped "tooth" in the bolt carrier that completed the closed barrel at the end of the priming cycle would not ENGAGE, because it had been bent and didn't line up with the corresponding wedge-shaped "gap" in the back side of the barrel.

I fixed it by just bending it back, and sharpening the "tooth" so it'd find its way into the "gap" better rather than bumping into it and stopping dead. Didn't have any missing pieces though.

This may or may not be pertinent, anyway, since I haven't had a Longshot_CS-12 apart to compare...