Yes, they did... markers and accesories. In fact they hold the patent for the 'cat series firing system; the roller valve.
Trying not to feed the trolls here... it's hard to resist.
There was a good thread on this a few years ago. http://www.automags.org/forums/showt...t=ptp+micromag
I'll go ahead and say it, powerfeeds with elbows, and twist locks are junk.
Hoppers flipping around, no fun to replace barrel detents........