Suppressing the UMP
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Thread: Suppressing the UMP

  1. #1
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    Default Suppressing the UMP

    I recently finished collecting all the necessary parts for a USC - UMP conversion. Soon it will be shipped to Tom Bostic for the conversion. I want to suppress the gun after my paperwork
    clears and I have the barrel cut and threaded. Should I go 16 x 1 LH, or .578 x 28. I would really like to use an AAC Ti-Rant 45. Anyone else with a suppressed UMP, what can are you using. Any thoughts or opinions on my
    potential setup?
    Last edited by Mr_Smith383; 11-18-2018 at 05:07 AM.

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    I do not have a USC or AAC stuff. I have several cans though and there is a lot to consider when getting one. One that I never took into account for instance was Rugged's shipping their pistol cans with a piston already and not willing to exchange them. They are nearly identical to SiCo pistons so no issue for me there. Another question to ask yourself is commonality. Do you plan to possibly use the can on a pistol of similar caliber? Any plans to get a USPT or HK45T then I would lean toward the 16x1LH. If you were to get an FNX45T than .578x28 would be recommended. Just some thoughts to consider, for me personally I do not like LH threads, but not enough to replace the barrels with other thread pitches.
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    My first can was a tirant for my ump. I went with metric threads cause I also had the 45 tactical. In the big scheme I f things it makes no difference if you go one way or the other.
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    I use a B&T can with the flange mount.

    If I was doing the Tirant, I would use this:

    https://www.advanced-armament.com/Fi...ies_p_719.html

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    Iíll be sending a USC and all the parts Iíve accumulated to Tom here in the near future.

    Iím going 16x1LH and will be running an AAC TiRant45. I already have a piston in 16x1LH and a fixed barrel spacer.

    I would run an KAC USP-T Suppressor but as far as I know, they donít have a fixed barrel spacer for the KAC cans.
    Last edited by Keith120286; 11-18-2018 at 09:19 PM.

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    Tom B. did a UMP conversion for me, and when my Form 1 comes back, I have a spare barrel that I bought and will send to Tom to have it cut and threaded to .578x28. SilencerCo makes a .45 ACP 3-lug muzzle device in that threading. I can then attach an Omega 45K with a 3-lug adapter. Easy on, easy off and better than screwing around with pistons and spacers.

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    Quote Originally Posted by Johoevasmatrix View Post
    My first can was a tirant for my ump. I went with metric threads cause I also had the 45 tactical. In the big scheme I f things it makes no difference if you go one way or the other.
    This... I did the same thing. I actually like the metric threads because they a thicker and there are less of them. So it's actually less turning vs. .578x28.

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    Another vote for 16x1LH- although I use a Griffin 3-lug adapter now.
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    I have my Bostic concerted UMP SBR with a Tirant 45 and metric threads. Works fine but far more POI shift than I’d prefer. Matt

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    Quote Originally Posted by ATL_Matt View Post
    I have my Bostic concerted UMP SBR with a Tirant 45 and metric threads. Works fine but far more POI shift than I’d prefer. Matt
    Glad to see this. I have the same setup I thought it was just mine.

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