They are out of business, however there are plenty of parts around. Most of them can be scavenged from 98 Mausers.
Detachable magazine models are quite a complicated setup. The trigger guard has a front screw that holds part of the action that receives the clip, but it is quite sturdy and I have never seeen one broken.
The magazine can get lost of course. <img src="/ubbthreads/images/graemlins/wink.gif" alt="" /> Not a problem for me as i never owned one iwth detachable mag.
Ted