I think the bodies were done b4 the guns were assembled.
My first matrix came with the pewter grips and a CP 12".
My second came with rubber grips and a 12" J&J.
So, really, I doubt #585 was the last. Probably random
bodies became LE. Also, some came with palmer stablizers
and Aardvark told me there are about 3-4 different versions
or the beehive reg on various guns. It all sounds random
to me. Just like some guns came out like crap (loads of
problems) and some are flawless. JMO.