mine is a 44 mag. if you intend to scope the gun; absolutely they are worth it. and after you scope it, you can take it on and off and your zero wont change. really i think the "convertability" is really handy. the ribbed barrel also helps keep light from bouncing off the barrel and fuzzing your sight picture. not usually a factor; until it snows and the sun is shining. awful nice to have that breaking up the glare. my gun is accurate enough to outshoot me. with 240 grain noslers and and 20 grns h110i was getting 3 inch groups at 75 yards. i am sure the gun can do better. i use a differnt load though (cheaper to shoot, not as accurate, but still meets my requirements).
if you never plan on putting a scope on, then i would say they are not worht the extra coin; but still nice and a head turner, too.
