Complex sentence: The Model 1892 incorporates a much stronger Browning action that was a scaled down version of the model 1886, and was a lighter rifle than the 1873 model, with which it was sold concurrently for over twenty years, and for the same price.
Split into simpler sentences: The Model 1892 incorporates a much stronger Browning action that was a scaled down version of the model 1886. It was also a much lighter rifle than the 1873 model, with which it was sold concurrently for over twenty years, for the same price.