I have a new custom AR-15-style rifle with two uppers. It/they are the first AR-15-style rifles I've needed to clean in 40+ years. I have discovered my gun vise/clamp does not serve the purpose of holding the uppers upside down for cleaning very well. They end up resting on the scope knobs and flopping around precariously when I use the cleaning knobs. As many people as use these rifles now days someone must have come up with a solution. What do you guys use?

That's cleaning rods vs. cleaning rods.

cleaning rods vs. cleaning knobs. Good grieif!

i don't know if they are still available but a it ago sportsman guide had a dandy one for about 100