I was looking at the wiki for this round at http://en.wikipedia.org/wiki/5.45x39mm and it is saying that the bullet diameter is 5.6mm (.22 inches), and not 5.45mm. Does this mean that I can shoot a .22 conversion through this barrel? The only problem I can foresee is the non-dedicated conversions have a faux chamber shaped like a .223 round. Anybody have any experience with this? I googled it to no avail.