If APs and ARs have 4.5 mm bores, what is the exact metric equivalent of a .22 LR pistol or rifle? It seems that several different conversion software packages differ in their answer.
Stan
help settle bore diameter argument...
Moderators: pilkguns, m1963, David Levene, Spencer, Richard H
.223" is equal to 5.66420 mm
Use an online calculator to convert anything.
http://www.worldwidemetric.com/metcal.htm
Use an online calculator to convert anything.
http://www.worldwidemetric.com/metcal.htm