This may be a dumb question but will the tantalize by century as be compadable with any other ak74 barrel? Like a Bulgarian or Russian with out needing to change the gas block? Ans also is it possible to swap on a shorter barrel like the one from a ak104 and keep the Piston and gas tube? The reason I ask is due to the fact that the Tantal seems to have slight differences from most AK's I didn't know of there would be any differences here to.