Look at the Timney 700 two stage light. Great trigger and works extremely well in ARC CDG actions. And you can get flat shoe which I also prefer.
THIS ^^ is the blue Timney. The Calvin Elite is yellow and is only single stage.
Look on Timney’s sight…I believe it was Eurooptics who listed the 2stage light as a Calvin Elite per another poster. It’s is NOT the blue 2 stage light. Where did you see a blue 2stage Timney listed as a Calvin Elite?
The 2-Stage trigger features machined and hardened steel work surfaces milled from A2 tool steel and all three sears are Teflon-nickel coated for added lubricity.