FG

The hammer spur will not work on an Omega because the hammer drops down into the stock the when you drop the trigger.

The open sights work just fine on my Omega, if you mount a scope you may need a cheek pad. The Omega was originally built to open sights.

But! with that aftermarket thumb-hole stock you are getting that may well be a problem - as I am sure the comb has been built for a scope.