49" is pretty big man, take out four 1 foot rulers and take a look. Technically though... it should be..
Let's see FDL is approximately 8 feet tall...
and the sword is about 3/4 - 7/8ths the length of his body...
A 6 1/2 foot sword with a 21 inch grip and a 57 inch blade.
Considering the average person is in the midrange of 5-6' tall... 4'1" is an accurate size for that. As it is the thing weighs about 11 pounds, an actual replica would probably be 16-18 pounds and a very ungainly weapon to swing around.
All in all, a very solid replica. I'm considering treating the steel to change it's color, however I might just use a binding agent and normal paint.
http://twiggystreasures.com/zelda-master-elite.html
This is the Master Sword I was referring to, probably the only one I think would be worth buying out of the existing replicas on
any site I've seen.
http://twiggystreasures.com/zelda-ranger-full-tang.html
The Razor Sword replica isn't half bad either.