yes
The Israeli Galil is also a 5.56mm AK variant. In fact, it's based on the M62 Valmet.
About 25 additional 5.56mm variants of the AK were legally imported. Chinese, Hungarian, Yugoslavian, etc. Still more are made overseas for the international weapons market.
The gentleman who suggested that the 5.56 and 5.45mm cartridges fired the same diameter bullet, or could be mutually chambered and fired, is mistaken. The 5.56mm casing is 45 mm long and will not chamber in the 5.45. The 5.45 will not chamber in the 5.56 (it's too fat).
The bullets are also constructed completely differently. The 5.45 ammunition was designed around a steel core.
I'm pretty skeptical of a 5.45 connexion. In this country it is a very exotic round, favoured mostly by collectors.
I'm personally suspicious that the most recent murder was unrelated to the originals, but the work of a copycat or wannabee. Lots of differences from previous practice.
All I can add is, I sure hope they bag this guy before he takes more innocent life, or well-meaning people trash more civil liberties in the pursuit of him.
d.o.l.
Criminal Number 18F