i do not notice any accuracy improvement but i havent done scientific testing since i mainly shoot lead reloads out of the eaa barrel and fmj out of the imi barrel i notice that it shoots a bit low with the eaa barrel but that could be my reloads
eaa barrel installed oem under

oem installed eaa under (oops forgot to put the mag back in)

both barrels together you can see the little cut i was talking about

polygon rifling (emphasis on gone)

conventional rifling
eaa barrel installed oem under

oem installed eaa under (oops forgot to put the mag back in)

both barrels together you can see the little cut i was talking about

polygon rifling (emphasis on gone)

conventional rifling

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