Duke...
Glad to see your interest in NCOWS. Make sure you go to the NCOWS web page that Pancho directed you to and take a close look at our by laws.
We have people that are interested in our organization only to find out after they have joined that their firearms are not NCOWS legal. For example, we do not allow modern modifications such as short strokes.
It looks like what you have is just fine...but again, take a close look.
If you are into old west history and research, this is the place for you....but we shoot too, do reenactments and camp out the old way....lot of fun!
There are a couple of us here in Indiana heading down to the Texas Regional in November, hope to see you there!!
Bill