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  • Transferable Machine Guns
  • Stemple 76/45 Takedown Guns (STG)
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  • Stemple Takedown Gun (STG) U9
  • Stemple Takedown Gun (STG)  U9
  • Stemple Takedown Gun (STG)  U9
  • Stemple Takedown Gun (STG)  U9
  • Stemple Takedown Gun (STG)  U9
  • Stemple Takedown Gun (STG)  U9
  • Stemple Takedown Gun (STG)  U9
  • Stemple Takedown Gun (STG)  U9
  • Stemple Takedown Gun (STG)  U9
  • Stemple Takedown Gun (STG)  U9
  • Stemple Takedown Gun (STG)  U9
  • Stemple Takedown Gun (STG)  U9
  • Stemple Takedown Gun (STG)  U9
  • Stemple Takedown Gun (STG)  U9
  • Stemple Takedown Gun (STG)  U9
  • Stemple Takedown Gun (STG)  U9
  • Stemple Takedown Gun (STG)  U9
  • Stemple Takedown Gun (STG)  U9 Stemple Takedown Gun (STG)  U9 Stemple Takedown Gun (STG)  U9 Stemple Takedown Gun (STG)  U9 Stemple Takedown Gun (STG)  U9 Stemple Takedown Gun (STG)  U9 Stemple Takedown Gun (STG)  U9 Stemple Takedown Gun (STG)  U9 Stemple Takedown Gun (STG)  U9 Stemple Takedown Gun (STG)  U9 Stemple Takedown Gun (STG)  U9 Stemple Takedown Gun (STG)  U9 Stemple Takedown Gun (STG)  U9 Stemple Takedown Gun (STG)  U9 Stemple Takedown Gun (STG)  U9 Stemple Takedown Gun (STG)  U9

    Stemple Takedown Gun (STG) U9

    $14.9k: Call or email to be put on the list for the May 2023 batch

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    Product Description

    2022 Update:  For 2022 we are introducing the new Internally Threaded Pattern (ITP) assemblies of the Stemple 76/45 receivers to offer a more streamlined and versatile system with enhanced compatibility among setups.  Per this previously approved method of attaching the trunion, separate trunions and bolt guides are no longer necessary for converting between the standard and heavy bolt systems. While these can still be used on the receiver, one trunion now does it all.  For example, the previous U9 conversion to the U9 slow fire setup required separate trunions/bolt guides, bolts, stocks, and buffers.  In the ITP setup only the stock and buffer assemblies are switched to add mass to the moving parts for lower cycle rates.  The bolt and trunion are unchanged.  The fire controls, stocks, and mag housings are also unchanged.  

    The conversion from the U9SF to the U45 in the combination guns is also further simplified by having a much heavier 45 bolt so a second bolt extension is no longer necessary to reduce the cycle rate.

    The STG1928 parts are also fully compatible with this setup. 

    2020 Update: We've recently switched to NiB One™ plating (silver/gray color) on the lower assembly, magazine housing, and barrel jacket. This high performance finish adds greater durability and ease of cleaning compared to the black anodized finish. 

    ------------------------

    U9 - Standard Bolt System 

    The STG Universal 9 (U9) features a simple, smooth-running blow-back system similar to the Suomi M31 which yields a cyclic rate of 750 rounds per minute.  These are the most smooth, controllable, and versatile subguns on the transferable market.  It's so smooth due to the weight, layout, and action; you can actually watch your target being hit through a 4x scope while shooting long bursts.  This setup utilizes rigid AK/ACE side-folding stocks or AR pattern stocks, AR pattern grips, and a variety of shroud and barrel options for both heavy and light setups. 

    Parts and Accessories Included With Each Gun: 1 drum, 1 magazine, multi-tool, spare buffer, choice of barrel and shroud setup  (sights not included)

    Transferable

    In 2003, the original inventor, John Stemple collaborated with BRP Corp to make new and replacement parts for the Stemple 76/45 receivers he manufactured prior to the 1986 cutoff.  From this came a series of compatible drop-on parts for the unmodified/transferable Stemple 76/45 receivers known as Stemple Takedown Gun (STG) setups.  Since nothing is welded or hand fitted to these receivers, changing setups and replacing parts is fast and easy.  These are the most finely built and smooth running sub-machine guns on the transferable market.  We build them for performance and durability, stock plenty of high-quality spare parts, and provide excellent service.  There is only a limited number of these pre-1986 registered/transferable machine guns remaining, so get one while they last.

     

    If you are going to buy a transferable machine gun for some serious shooting, you should consider the Stemple Takedown Guns for these reasons:

    They are ‘new’

    Well, the receivers are nearly 30 years old but the Stemple Takedown Gun (STG) setups are complete new parts packages installed on unused pre-1986 transferable Stemple 76/45 machine gun receivers.

    Simple / Durable Design

    Our guns are very difficult to break and very easy to fix. They are simple blow-back guns and very smooth-running in long full-auto bursts. Some of our customers who own the 9mm guns liken the full-auto performance to a laser beam.

    Customizable

    By using Picatinny rails (MIL-STD-1913) for sights and hand guards, shooters can add a variety of accessories and optics.   The configurations with the Adjustable Bolt System use common AR pattern stocks and grips with hundreds of options currently available. 

    Easy-to-Replace Parts

    There’s nothing on these guns that can’t be easily replaced.  We designed this system to protect the registered receiver from any wear during use.  The only parts that can wear can be easily replaced without the need to ship the gun back and forth.

    Available Service

    If you need service, we are here to support our products.

    Shoot Cheap Ammo

    We typically just shoot steel-cased ammo. Our milled steel trunions easily deal with potential wear issues from any type of ammo.

    Capacity and Control

    These guns use 70 round drums and are smooth cycling, heavy, accurate, and comfortable to hold.  It's basically an assault rifle with a sub-caliber setup... a very controllable and accurate gun in full auto.  It's so smooth due to the weight, layout, and action; you can actually watch your target being hit through a 4x scope while shooting long bursts.  The 'laser beam' performance of this gun makes it one of the most enjoyable full auto guns you'll ever shoot.

    Can't Get Too Hot

    These are ideal for machine-gun shoots. The low-pressure pistol ammo cannot create enough heat in the barrel to cause a malfunction or damage the gun.  There's no gas system to clog, and the open-bolt system negates any cook-off risk.

     

     

    Product Information:

    NiB One™  plating (silver/gray color) on the lower assembly, magazine housing, and barrel jacket. This high performance finish adds greater durability and ease of cleaning compared to the anodized finish.

    Select-Fire with Quick-Change Barrel

    Caliber:   9mm

    Weight: 8 lbs with MN shroud/barrel, 9.7 lbs with Suomi M31 shroud/barrel

    Magazine: Suomi KP31 25 rd, 36 rd, 50 rd magazines and 40 rd & 70 rd drums

    Standard Rate Setup with Folding Stock (750rpm)

    (sights not included)

      

    Stock Options

     

    The U9 Buffer uses the ACE-pattern screw mount (2 x 10-32 threaded holes) for attaching the stock assembly. The Skeleton Stock can be used with or without the folding stock mechanism. Also, there are numerous other adapter and stock sets that are also compatible with the U9 Buffer including an AR stock adapter These include the following:

     

    Skeleton AR Buffer Stock:
    https://doublestarusa.com/akfx-ss-redesigned-ak-skeleton-stock-7-5-qd-swivel-not-included-a317-ns
    https://doublestarusa.com/akfx-s-redesigned-ak-skeleton-stock-8-5-qd-swivel-not-included-a318-ns

     

    Folding Stock Mechanism:
    https://doublestarusa.com/ace-recoil-pad-1-a999

     

    Recoil Pads:
    https://doublestarusa.com/ace-recoil-pad-1-a999
    https://doublestarusa.com/ace-recoil-pad-0-5-a998

     

    Single Point Adapter:
    https://doublestarusa.com/ae-sm-ambi-single-point-adapter-plate-a225

     

    Push Button Adapter: https://doublestarusa.com/fsm-pb-push-button-folding-mechanism-without-boss-a500pb

     

    AR Stock Adapter (foliding): https://doublestarusa.com/fsm-ar-folding-mechanism-for-ar-type-stocks-without-boss-a504
    AR Stock Adapter (non-folding) https://doublestarusa.com/car-15-stock-adapter-without-boss-pig-nose-a510

     

    Triangle Manticore Stock: http://www.robertrtg.com/store/pc/MANTICORE-TRIANGLE-STOCK-WITH-HINGE-ASSEMBLY-4p3603.htm
    https://doublestarusa.com/triangle-skeleton-stock-a130

     

     

     

    Options and Add-Ons:

    • Add M31 Slant Shroud with Bottom Rail and 9mm 12.875” Barrel:  $260
    • Add M31 Compensated Shroud with Bottom Rail and 9mm 12.875” Barrel:  $260
    • Add 16” 9mm Barrel Threaded 1/2-28: $120
    • Add Case: $475
    • Add Silencer: $700 (Griffin w/ 3lug setup for 10.35" barrel)
    • Add Universal Slow Fire Stock and Buffer Assembly for ITP Setups: $360

      

     

     

    Product Videos

    Videos Hide Videos Show Videos

    • STG U9 5 2015

      The STG Universal 9 (U9) is our newest addition to the U Serie...

    • STG U9 Transferable Machine Gun

      Stemple 76/45 (STGU9) at JRS Shoot July 2014. 9mm transferabl...

    • BRP Range Day 01-14-2016

      Shooting some guns with customers: Stemple 76/45 SMG with U9 ...

    • u9 vs mg42

      STG U9 vs MG42 vs Fire Extinguishers full auto fun brought to ...

    • Man's Day 3-5-2016

    • STG U9 Disassembly & Reassembly

      also see: https://www.youtube.com/watch?v=wid3hAyqXU4

    Custom Field

    Product Reviews

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    Write a Review

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    Stemple Takedown Gun (STG)  U9
    Stemple Takedown Gun (STG) U9

    5 Reviews Hide Reviews Show Reviews

    • 5
      Stemple Takedown Gun 9mm

      Posted by John from Holton Michigan on 31st Jan 2020

      I purchased mine from BRP about 12 years ago. I had a minor issue with jamming the first month. BRP took care of that IMMEDIATELY. It has worked flawlessly ever since. I purchased it for investment and fun. Wow, has it paid back in both categories! It's worth many $1,000's more than what I paid for it. It is so much fun to shoot, and it never jams. Thanks Brian & BRP! John from Holton, MI

    • 5
      STG U9

      Posted by Roger J on 16th Oct 2019

      I've had one of these guns for about 18 months now. Fired about 10K through the gun with ONE malfunction from an improperly loaded stick mag. Flawless operation with the drums. Super easy to control and every one on the range wants to shoot it. I try to bring a little extra ammo for others to fire. This gun is so much fun I may buy another.

    • 5
      Excellent Quality

      Posted by John on 21st Nov 2018

      John The guys at Gun Point said that they were really impressed with the quality of your workmanship on the Stemple.  I told them that from what I've observed all of your parts are of impeccable quality.

    • 5
      AWESOME! EXCEDED my expectations!

      Posted by Kevin S. on 21st Nov 2018

      I just received possession of my Stemple 76/45 STG Setup. The craftsmanship and quality of the build is impressive! The firing and handling was AWESOME! EXCEDED my expectations ! MY oldest nephew (45yrs), who also appreciates a quality product and a fellow firearm enthusiast, was also praising your product .

    • 5
      U9

      Posted by Double Tap Firearms on 21st Nov 2018

      Great gun, love the way it breaks down comes with a case and all components. Like the fact that it shoots steel case cheap ammo. Brian is great to deal with and if you have any problems he takes care of it. Also it is a brand new gun just on a registered receiver. Great Value if you're buying machine gun. The only problem I see right now I have is I don't have enough money to buy more :-). David

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