I purchased two of those red sidefolder kits from RPB back in 1995. One to my brother and one for me. I sent a MAK-90 to RPB in 1995 and they shortened up the barrel, pulled the gasblock back, and put a custom Krinkov muzzle break on it to make it 16.5 inches. It was really nice and I let it go sometime in 2001. My brother let his MAK-90 go with the red sidefolder kit sometime in 1997 to a friend of mine. I checked with him last night and he still won't get off of it.
Here is an early pic and you can see the red sidefolder with the shortened barrel:
Johno knew how bad I wanted a red sidefolder again and he let me buy him out and take over his "Red China" project at InRange. So sometime in the spring of next year, watch for Project Red China...My sincerest thanks to you Johno.
Thanks for posting the pic from ARS because it's exactly what it will look like!!