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Conversion to 300 AAC BLACKOUT reamer
PTG is making a reamer which cuts the complete chamber except for the shoulder so it will not increase headspace. Generally, this will lengthen the throat and ensure the diameter is not too small.
This is the same idea as converting a 223 to 5.56mm chamber or a 6.8 SAAMI to 6.8 SPC-II chamber.
They will have a match one for bolt actions and one with a little more space for ARs to feed easier.
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R&D for AAC
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