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The AK-47 shoots a 7.62 x 39mm bullet. The 39mm indicated the length of the brass/steel case.
The thickness of a standard 39mm casino chip averages about 3.38mm.
39mm
3.9cm
7.62mm x 39mm
7.62x 39mm
7.62×39mm
+39mm offest on the OEM 18inch wheels
The cartridge is 7.62mm x 39mm long.
The 7.62 x 39mm round is commonly used in the AK-47 series of rifles, which includes many, many variants. It is roughly .30 caliber, or 30-hundredths of an inch in diameter. The 39mm means that the brass case is 39mm from base to the rim. For comparison, the newer AK-74 rifle fires a 5.45x39mm round, which has a diameter slightly less than a .22!
The 39mm Dyna set will definitely fit. If you are trying to put bigger forks along with a Dyna front end, you will still be able to put it on but you can expect a much stiffer ride because of the larger springs in the fork assemblies. Hope this helped!
5 x 100mm, + 39mm offset.