Degtyarev Upgrades: DP27 vs DPM

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The full version of this video, including range footage and no giveaway segments, and in 4K resolution, is available at the History of Weapons & War app:
https://forgottenweapons.vhx.tv/videos/dp-vs-dpm-4k

The Degtyarev DP (aka DP-27) was the subject of a bunch of experimentation during the 1930s, but none of the trialed modifications were actually adopted. It was only in 1944, after several years of combat experience, that the design was updated to correct a number of shortcomings. Specifically:

– The recoil spring was moved away from the gas piston and up behind the bolt to prevent its overheating.
– The traditional stock and grip safety were replaced by a pistol grip and manual safety.
– The detachable bipod was replaced by a more permanently attached model.

The DPM was a much better-handling gun than the original DP, and it maintained the simple disassembly and economical manufacturing of the original. The pan magazines remained a complaint because of their awkward handling, but no easy change was available for that during the war.

2 Comments

  1. Краткое руководство службы. 7,62-мм ручные пулемёты ДП и ДПМ. (1946) available at https://ukr.bulletpicker.com/pdf/%D0%9A%D1%80%D0%B0%D1%82%D0%BA%D0%BE%D0%B5%20%D1%80%D1%83%D0%BA%D0%BE%D0%B2%D0%BE%D0%B4%D1%81%D1%82%D0%B2%D0%BE%20%D1%81%D0%BB%D1%83%D0%B6%D0%B1%D1%8B%207%2C62-%D0%BC%D0%BC%20%D1%80%D1%83%D1%87%D0%BD%D1%8B%D0%B5%20%D0%BF%D1%83%D0%BB%D0%B5%D0%BC%D0%B5%D1%82%D1%8B%20%D0%94%D0%9F%20%D0%B8%20%D0%94%D0%9F%D0%9C%20%281946%29.pdf claims that
    – DPM bi-pod is more durable than older device (this suggest that problem was with part being too sensitive to damage, rather than its’ disposal by users)
    – safety manipulator is same as in DT (tank)
    – trigger was simplified and will not work with DP safety
    – you must not shove DPM trigger group into DP
    – Соединительный винт is not interchangeable between DP and DPM
    – DP and DPM springs are not interchangeable, but DP spring could be reworked to fit DPM
    – Затворная рама ДПМ must not be shoved into DP
    – Выбрасыватель ДПМ is analog of one used in SG machine gun
    – Воек from DPM must not be used in DP, reverse is possible
    – DP and DPM are not interchangeable
    – DP and DPM flaps are same
    – DPM receiver will not work in DP
    – you can plop DPM barrel into DP, but reverse would fail
    All combat, technical and technical characteristics are same between DP and DPM.

    • is: “(…)DP and DPM are not interchangeable(…)”
      should be: “(…)DP and DPM bolts are not interchangeable(…)”

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