It appears to be a cross-breed design in my opinion. Its a break-action like a Triumph, but has a breech plug that looks like the Omega/original Encore. It may very well be the same breech plug- I'm not sure.

Impact has a 26" barrel versus 28" for Triumph/Omega. Stock is adjustable for length of pull. The outside diameter of the barrel also appears to be similar or the same as the Omega. The Triumph has a smaller outside diameter barrel measurement.