Originally Posted by
pba_target
Nope, not in this case. Iirc some stuff was (fuel couplings), but their ammo is totally different. 7.62x39mm (AK ammo) is a different length to NATO ammo (7.62x51mm) and is fundamentally incompatible. The AK was conceived much more as a sub-machine gun rather than the "battle rifle" typically associated with 7.62 NATO (FAL etc)
NATO ammo is (for m80) a 10g bullet doing 850m/s ish while Soviet is an 8g bullet doing 715m/s ish, to give a rough comparison in "oompf"
Putting a 762 Russian in a 7.62 NATO or the other way around wouldn't fire, may cause a jam... And the 5.45/5.56 the same. However many combloc mortars were made to use NATO spec ammo in a pinch. 81/82mm with loss in range and accuracy but still shoots.
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