I made a dozen or so little tools that were a brass pin in a plastic block. The plastic fits on the rails of the upper to line it up, and the BCG acts as the 'hammer'.
I never saw much response in terms of how badly people wanted these, presumably because the cleaning rod works well enough that there is no need for a better solution.
I never saw much response in terms of how badly people wanted these, presumably because the cleaning rod works well enough that there is no need for a better solution.