The Winchester Model 1910 (also known as the Model 10) is a blowback operated semi-automatic rifle produced by the Winchester Repeating Arms Company beginning in 1910 with production ending in 1936. This rifle is fed from a 4-round capacity, detachable box magazine located immediately forward of the trigger guard. Winchester only chambered the model 1910 in the .401 Winchester Self-Loading or .401 WSL cartridge.