I don't have the "Cowboy" but one of the best investments I've made in a gun are the XS Ghost-ring sights I put on my 1895G 45-70. It's my favorite rifle now, hands-down....
As a matter of fact I was just banging steel at 100 off-hand with it yesterday and I think I can hit better with it than any of my scoped rifles!!
I second the XS ghost ring. I put one on my 1895M .450 Marlin to similar effect.
