I can't help with where to get one... but if you haven't found one by Monday (gotta work this weekend), I'll pull mine and see what size and thread it is so that MAYBE you can find one to match it.
Paul
paintballtommy,
the factory screw on my AMT is a 10-32 with a 1" long threaded portion. They are available in most hardware stores in blued steel, occasionally in stainless.
Good luck,
warren
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