Have you tried to find a Marlin Summer Biathlon Kit there are none to be found I can convert your standard rail to accept clips and turn your singe shot target rifle into a very accurate repeater. I machine the lower rail and instal a push button mag. release. I can modify your current one or I can supply the lower that way you can switch back and forth it is like 2 guns in one. Contact me if you are interested in this service.
Andy (828) 310-2007 firstname.lastname@example.org
Another picture with Mag installed