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Thread: tech ?s for RPD build

  1. #1
    Gunco Rookie fritsch's Avatar
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    Default tech ?s for RPD build

    I have two questions:
    How in the world do I headspace an RPD? I have a new barrel kit from sarco, and in order to close the bolt fully, the barrel has to have the slot for the ejector milled out, but how do you know where to mill the ejector slot if it's not headspaced? I'm missing something. Can anyone help?

    My second is: What is the slot in the barrel for ejector shaped like and what bit would I use to cut it. I think a picture would be worth a thousand words to ancewer this question.


    Thanks,
    fritsch

  2. #2
    Gunco Member TheRedHorseman's Avatar
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    I would suppose that the ejector cut would come only after the barrel has been headspaced.

    Is this one threaded or a press and pin style? I'm aware of semi-RPDs using both.
    Hated by many, loved by few.

  3. #3
    Gunco Rookie fritsch's Avatar
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    The barrel that came from sarco is threaded and the 80% receiver i'm milling has room to cut threads, so i figured i'd keep 'em. Are the originals threaded AND pinned? How do they keep it from rotating otherwise?

    I'm not sure, but i think i may have figured it out. I think you have to screw the barrel all the way in until it hits that little tab that guides the round into the chamer. Then you actually head space it from the back where the "fins" (whatever those loose pieces of metal are beside the bolt) fit into the diaginal depressions in the receiver. Can anyone shed some light on this? Am I on the right track?

  4. #4
    Gunco Member blackshoesnipe's Avatar
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    Head over to projectguns.com
    Pirate is doing a run of RPD's right now, and has stared a build tutorial. He can help You with Your questions.

  5. #5
    Margaritaville Native jjglith's Avatar
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    All your questions can be answered at:

    Project Guns <----linky Sign up to the forum.

    It looks like there are more RPD kits showing up at different places. If any of you guys want to build one or have one built now would be a great time.
    “Democracy is two wolves and a lamb voting on what to have for lunch. Liberty is a well-armed lamb contesting the vote.”
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  6. #6
    Administrator pirate56's Avatar
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    I will be doing a tutorial on this soon as soon as the first batch of guns with original bbls is finished. you will need a special cutter to cut the extractor slot. we have one being made.
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  7. #7
    Gunco Rookie jimr's Avatar
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    Default Observation

    Lockup section of the orginal receiver that was inculded with my kit
    has a broach cut on both sides to set lockup. Does anyone have any
    info on methods and tooling used to mfg. the RPD.

  8. #8
    Gunco Rookie s2324's Avatar
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    RPDs are pretty darn cool. Thanks for providing the service Pirate.

    Scott

  9. #9
    Gunco Member IRONMULE's Avatar
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    Hello Anyone know how to headspace a RPD with GI chrome barrel? After screwing in the barrel,then align it according to your sights, gas ports, bipod etc already installed on barrel,do you cut the two side locking plates? Thanks for any inputs IRONMULE

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