Friend has R700 in HS precision stock w/ CDI DBM. Feed/function fine but the mag release lever spring is weak and will occasionally get caught on something and drop the mag. We took it apart yesterday and it's a standard round compression spring. Google only returned an old thread on The High Road with the usual "go to hardware store and find a stronger spring" suggestions. We can do that but I've generally not had much luck like that. And I know about McMaster Carr but figured others may have had same problem and there might be a quick solution w/o having to experiment/order various spring options. We'll probably also trim the lever length a bit too.
