The Remington Model 12 is a slide-action, solid-breech, hammerless, takedown, side-ejection rifle. This gun, designed by J. D. Pederson, was introduced in 1909 and produced through 1936. During the 37-year period, there were 820,759 guns sold. The gun featured a hammerless action and competed quite successfully with the 1906 Winchester which still had an exposed hammer.