Swiss Vetterli Rifle, Model 1881

Anyone know where I might be able to find a replacement bolt action breech loading mechanism and lifter for a:
The Swiss Vetterli rifle Model 1881 converted carbine?

http://www.swissrifles.com/vetterli/

Please e-mail any positive responses direct, as well as post to site.

Thanks in advance.

Joe Morrash
jmorrash@aol.com