Pretty sure the Omega, Encore and Triumph share the same scope mountings. I used to have the Weaver style 1 pc base and Warne Quick Detach low rings pictured here on my Omega:



They worked, but I prefer a lower mount. So I switched to the 1 pc Leupold base and dualdovetail low rings:




As already been said... the Weaver style has more options forscope placement.