One of the enjoyable aspects of this site is that once a thread is launched, there's no telling where it will go. But, thanks for all your responses. I've pretty much given up on the idea of a full length rib. A quarter rib seems more practical. A shortened magazine tube seems like a good ides too. Any other suggestions are welcome.

Last edited by rocky mtn bill; 01/30/14 11:52 AM. Reason: correction