This is my biggest gripe against keltec. They have some good innovative products, but they keep making hodge-podge changes that screw up the aftermarket supply chain. I have a new KSG that uses the 6-slot barrel nut removal tool and an even “newer” KSG that need the older 4-slot tool!
Because of their modular assembly model changes and up grades are completely hit and miss. What works on one model may be completely usless on another and good luck in figuring out which is which!
And some of their changes make no sense or improve the firearm in any way.
I just don’t get it!