High Quality Content by WIKIPEDIA articles! The Marlin Model 60, also known as the Marlin Glenfield Model 60, is a semi-automatic rifle that fires the .22 LR rimfire cartridge. Produced by the Marlin Firearms Company of North Haven, Connecticut, it has been in continuous production since 1960 and the company claims it is the most popular of its kind in the world. Major features include a micro-groove barrel, a cross-bolt safety, hardwood stock with Monte Carlo comb, and brass inner magazine tube.