Nemesis Arms is a company out of California. They were showing off their Windrunner which is a sniper rifle that comes in .243, .260, .308, and .338 Federal (???). The rifle breaks down easily and comes in a nice little case for transport. The rifle was designed by Bill Ritchie who is supposedly the designer of the .408 Cheytac round.
When I saw the Windrunner name, it sounded very familiar. Turns out it was because I was looking at a Windrunner .50 BMG Rifle that was for sale on KSL classifieds recently. That Windrunner was made by EDM Arms of Hurricane Utah. However EDM Arms has their machine shop in Southern California. EDM Arms also just happens to be owned by Bill Ritchie. So obviously this is just the EDM Arms M06 Mini Windrunner being sold by Nemesis Arms. Beyond that, your guess is as good as mine as to their relationship.
It looked like a pretty nice rifle. And the calibers are quickly changed. The barrel just indexes and slides into a very precisely machined bore then a big nut tightens it in place. It was fairly heavy, but no terrible. It weighs 11 lbs. I’m not sure why, but at $3,850, the Nemesis Arms version is $400 less than the EDM Arms version.
Well, anyway, here is their brochure: