I have two muzzleloaders that have double set triggers and I really like them. Is it possible to put these style triggers on a bolt action or lever action rifle?

I don't know about a lever gun, but you can put them on a bolt gun. I've got an old custom K98 Mauser with doubleset triggers.......

Single set triggers are much more common
CZ uses them... the only factory rigle I can think of this morning. I have Canjar single set triggers on a couple of my Ruger No.1's... many rifles do not have room to put double set triggers on

That's a really nice looking rig. Is that an old weaver scope you have mounted?

Thanks......Yep it's an old Weaver KV. As well as a capped reticle adjustment knob on the right side of the turret it also has the power adjustment knob there as well. It also has a cap but it's smaller.

This is a very old custom rifle but it has one of the sweetest triggers I have ever shot.