capable of withstanding being buried in dirt, mud, or sand and still operating consistently. However, being magazine fed, it had a rate of fire similar to other light machine guns, like the Bren light machine gun, but low when compared to its main wartime rivals, the German MG 34/MG 42 series, firing at a rate of 550rpm as compared to the 800-1,500rpm of the German general-purpose machine guns. The operating mechanism of the DP-27 is gas-operated, using a Kjellmann-Friberg flap locking design to lock the bolt against the chamber until the round had left the barrel, aided by a recoil spring. Ammunition came in the form of a 47-round circular pan magazine that attached to the top of the receiver. Because of the shape of its magazine, the DP-27 was nicknamed the "record player". Its main parts were a removable barrel with an integrated flash suppressor and gas cylinder, a receiver with the rear sight, a perforated barrel shroud/guide with the front sight, the bolt and locking flaps, the bolt carrier and gas piston rod, a recoil spring, stock and trigger mechanism group, a bipod for firing from prone positions, and the previously-mentioned pan magazine. In total, the first versions contained only 80 parts, indicating both the simplicity and ease of manufacture of the design. Early versions had 26 transverse cooling fins machined into the barrel, but it was found that these had little cooling effect and so were deleted in 1938, further easing manufacture. The design had several weaknesses that would eventually be addressed in later variants. The pan magazines were prone to damage, while also being difficult and time-consuming to reload. The bipod mechanism was weak and likely to fail if not handled with care. The recoil spring's location near the barrel led to overheating, causing it to lose proper spring temper. Typical of light machine guns of the era, the 47-round magazines made sustained fire impossible. In contrast, the German MG-34/MG-42 were continuous belt-fed general-purpose machine guns and provided a sustained fire capability the DP series could not match. Designation The Degtyaryov machine gun was accepted for Red Army service in 1927 with the official designation 7,62-мм ручной пулемет обр. 1927 г (7.62mm Hand-Held Machine Gun Model 1927). It was called the ДП-27 (DP-27), although some western sources refer to it as the DP-28. History Despite its numerous problems, the DP had a reputation as a relatively