RFC MP5SD Suppressor Designs
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    Default RFC MP5SD Suppressor Designs

    Been throwing around some suppressor designs for the MP5SD, let me know what you think and any issues.




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    Looks interesting--- have these been patented???

    Tony
    Last edited by AGG; 03-01-2019 at 01:41 PM.

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    Your baffles need a reverse scoop on one side to create turbulence of gas in the suppressor. Gas going in two directions “traps” it and makes it quiet
    Last edited by TheColtCollector; 02-26-2019 at 10:21 AM.
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    For anyone truly serious about designing suppressors, I would highly suggest one use the skills of a Mechanical Engineer specializing in fluid dynamics.
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    I don't get the shorter length and smaller OD cans for the SD. I have shot a few different ones and they just seem to leave too much on the table for the size trade-off. (Less db reduction, more blow-back, etc). Factory is 11.89 x 1.57 and even if the goal is to "modernize" the design... Why not take full advantage of volume.
    When the Omega 9Ks first came out, numerous people compared the new "marvels of technology" to the MK-9K. Well, I bought one... And then laughed. Nice can, but there is no substitute for volume and no "free lunch" when it comes to suppression.
    None the less... Good luck on your project.
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    @TheColtCollector any good literature for the reverse scoop design? I noticed not all suppressors employ that
    @NickJ1nd in terms of OD i am limited by the MP5SD cage, i do plan to design a longer version
    Last edited by VX666; 02-26-2019 at 10:42 PM.

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    Quote Originally Posted by VX666 View Post
    @TheColtCollector any good literature for the reverse scoop design? I noticed not all suppressors employ that
    @NickJ1nd in terms of OD i am limited by the MP5SD cage, i do plan to design a longer version
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    My understanding of the original design is there are vents in the muzzle end barrel support. It looks to me that this design entraps the high pressure vent gas. Is the design able to hold that pressure? Also with the thickness of the mount end plate, the powder is still burning at that point. Most SD cans leave the barrel vent area open. I would think that carbon residue from the burning powder would plug the restricted gas ports much more quickly than the original design. Those ports in the barrel become restricted and must be cleaned regularly with the original open design. I would think that the restricted threaded area of the threaded thick area above the threaded base would restrict the barrel vents very quickly, possibly bringing the round to supersonic speeds and causing over function with the rollers pounding the guide rails in the back of the receiver.

    Scott

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    Sorry about the delay, been doing a lot of recalculations and re-engineering.

    Here is an updated design, but I'm not certain of the barrel nut (spacer C), if it should have vent holes or not.



    I have noticed that other newer aftermarket designs have vent holes on the barrel nut.


    heads and tails flip


    But the original earlier designs did not


    image host


    So my remaining concerns are; will vent holes in the barrel nut help release pressure and reduce db or increase db?

    Can the entire suppressor be made of aluminium or will the pressure be too much? would steel be a better choice? (mind this is for 9mm)

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    'photo from Sam Pikula'! Ain't that interesting? We all know who Sam Pikula is, don't we?

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