Beeman Chinese air rifles such as the Mach 12.5 has the same power plant as the AR2000 or the Tech Force Jet. Which is more into the magnum spring air rifles with an adjustable trigger. The Teton has a fixed non adjustable trigger. The Sliver Sting not sure what it is. You may do a search in the GTA on the Jet if interested in past posts. I think there are a few on the Mach 12.5 also. Hope that helps.