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  1. HK PARTS AND ACCESSORIES FOR SALE
    Used but in great shape USC bolt and barrel. Barrel was cut to 6.62 and threaded in 16x1lh. This shorter cut allows the use of your personal 3 lugs while keeping the total length around 8 inches. Both have had about 700 rounds thru them. The barrel does not come with the 3 lug but will...
    $650 USD
  2. HK NFA TALK
    A well-worn subject, I'm sure. I'm a recently retiring engineering guy who now has some time on his hands. My company has over two decades of experience in design/manufacture of industrial training equipment. My .45 UMP has a flanged barrel. I would like to hush it up a bit but don't want to...
  3. WANTED TO BUY HK PARTS AND ACCESSORIES
    Looking for a UMP 45 bolt anyone's willing to part with. If you've got anything you're willing to let go shoot me a message/pics with your asking price. It can be complete or stripped, I don't mind either way. Thanks guys.
    $0 USD
  4. HK NFA TALK
    Hey folks, looking to get into the NFA game with my USC -> UMP conversion and trying to decide between SiCo, Rugged and Griffin suppressors. What do you run, what do you like/dislike about it, too gassy, too long, too heavy etc. Thanks!
  5. HK PARTS AND ACCESSORIES FOR SALE
    It’s that time of the year, cleaning out my abandoned projects. All prices are PLUS shipping. I’ll take it in the post per forum rules. Have questions? PM me. Know what’s legal in your state, all NFA rules apply. NOT PARTING OUT. I’ll take zelle or venmo. 1. HK UMP fuse conversion starter kit...
    $2,000 USD
  6. HKParts.net
    Stock Conversion Kit – APC9/APC45 HK PARTS Buffer Tube Adapter – UMP HK PARTS 20 Round Magazine Complete – Red – VP9SK & P30SK HK PARTS Tactical Threaded Barrel -1/2 X 28 – 9mm – German P30 HK PARTS In stock and ready to ship today. HKPARTS https://www.hkparts.net/ (801) 987-3494
  7. WANTED TO BUY HK PARTS AND ACCESSORIES
    Hey folks, looking for a demilled rear receiver section for the UMP. Just searching for the full-size version w/ UMP ejection port and original markings at the moment, though I don't know how much of a unicorn these are as I haven't seen any in-stock in the last several months of my looking...
    ump
    $0 USD
  8. HK LONG GUN TALK
    Hey folks, just looking to get confirmation or recommendations on my USC to UMP conversion plan and parts list. Hopefully I'm not missing anything. Any personal anecdotes or lessons-learned welcome! PARTS LIST: USC (duh) FBI UMP lower Demilled rear receiver (4 in. min. for fuse) Lower receiver...
  9. WANTED TO BUY HK PARTS AND ACCESSORIES
    What’s up everyone happy holidays! Anyone know where I can purchase a rear umps receiver stub?
  10. HK LONG GUN TALK
    Hey folks, newcomer to the forum, looking for some clarity regarding the HKParts UMP lowers for a USC -> UMP conversion. Essentially HKParts has a fully German-made lower and a German/US-made lower. The description of the latter states that the lower grip frame, hammer and bolt catch are...
  11. Want to Buy MP5 Mug

    WANTED TO BUY HK PARTS AND ACCESSORIES
    (Upper left) Looking for an extended rear section from a UMP that extends past the ejection port. Can trade cash and/or a long(ish) rear section that can't be used for the full fuse. (Upper right) Looking for an MP5 mug. I can offer cas and/or one of any mug excluding Feb and March (Mark 23 and...
    $0 USD
  12. HK PARTS AND ACCESSORIES FOR SALE
    Selling my HKParts.net 9mm flanged short barrel in very good condition. This barrel is for the traditional UMP look on your clones and is US made. It came from one of the early HKParts.net 9mm conversion kits and runs great. $225 shipped. Sold Also selling my ACR stock and stock block for...
  13. WANTED TO BUY HK PARTS AND ACCESSORIES
    Hey there! Looking for a UMP rear demilled section for a USC to UMP fuse method conversion. Shoot me a PM! Thank you!!!!
  14. HK PARTS AND ACCESSORIES FOR SALE
    All parts are for the HK USC/UMP platform unless noted/ All prices include shipping. Will take venmo/PP. SEF Tactical dual magazine clamp for UMP45 mags. Excellent shape. $75 $50 SOLD HAGA Defense extended quad rail. Includes all mounting hardware. Excellent shape. $275 SOLD
  15. TENNESSEE
    Putting together a ump 45, looking for all receiver parts and backplate. Thanks!
  16. HKParts.net
    $149.95 UMP – 2 Position Lower Grip Frame New UMP Lower. 2 position settings (S,F). Perfect for all your own internals. This item is ideal for the USC to UMP conversion or to keep as a spare. Each lower fits & works with the 45, 40 & 9mm calibers using UMP magazines. UMP .45 UMP .40 UMP 9mm...
  17. WANTED TO BUY HK PARTS AND ACCESSORIES
    Hi, looking to get a UMP semi (2 position) lower and 2+ UMP 45 magazines. Shipped to Austin, TX.
  18. WANTED TO BUY HK PARTS AND ACCESSORIES
    Im building a UMP clone and I need one so I can have Tommy cut and thread it Send me a message, im in FL
  19. HK CLONE TALK
    I am in the process of building a 45 UMP clone from Tommy. I bought a kit from hkparts and I am really in the gathering stage so far. I want it to be a pistol in 45 with a 3 lug. I thought that if i got the HDPS threaded 8 inch and the silencerco adapter (pics) it would be ok. Tommy said that...
  20. HK PARTS AND ACCESSORIES FOR SALE
    HK UMP Folding Stock - German - $169.95 Heckler & Koch German/US Made - Safe, Semi UMP Lower - 2 Position - $369.95 Heckler Koch/GSG9 UMP, USC Rear Stock Pin - German - $24.95 Heckler & Koch US Made Magazine Compliance Kit - UMP .45 - $19.95 HKParts.net Sear For USC, UMP & SL8, G36...
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