I was out of town when I purchased it for a mule deer hunt. I returned home with 4 days until I left. I tried it on my McMillan stock and would not work. I did some research and talked to some guys about it. They explained I had to buy another $50 adapter for it to work when I had already spent over $300. All your advertisement videos say you can use it on any stock. So I have not got to use it and thinking about returning it.
The tracer SP head is exactly what I needed. It is lightweight, but also very solid and sturdy. I love the ball head that allows you to turn or an angle your scope or rifle in different ways. Definitely recommend.