The most common is a rear sight that adjusts in both directions, though military rifles often have a " tangent sight " in the rear, which a slider on the rear sight has pre-calibrated elevation adjustments for different ranges.
12.
The second model, sometimes called the MP34, or the " standard model ", had a 25 cm barrel and no provision for a bayonet; the rear sight on these varies some had a tangent sight, others a simplified flip-up " L " sight.
