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U45 Setup for the Stemple 76/45... 

Now Available 

Stemple Takedown Gun - U45 (45ACP setup)

Ultra-smooth adjustable-weight bolt system with hydraulic buffering for slow M3 Grease-Gun-like shooting performance 

Magazine: M3 Grease Gun (unmodified) 30 rds

Nickel Boron Plated Bolt

Stainless Steel Barrel

Weight: 9.3 lbs

Cycle Rate: 500-750 adjustable system with hydraulic buffer, Select Fire (safe-semi-full)

Barrel Length: 10.35" threaded .578-28, quick change barrel

This gun is ideal for a suppressor. The extra bolt weigh drastically slows the initial bolt blow-back thereby significantly reducing port noise common in open-bolt / blow-back SMGs.


(sights not included)



The STG Universal 45 (U45) is our newest addition to the U Series setups for the Stemple 76/45 machine gun. They feature a simple, smooth-running blow-back system.  With the addition of a hydraulic buffer, 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 AR pattern stocks, AR pattern grips, and multiple picatinny mount options for maximum versatility.  Shooters can customize their preferred rates simply by adjusting the bolt parts.  



The U45 setup uses the same U Lower Assembly, Barrel Shroud, and Adjustable-Weight Bolt System as the U9 SF.  If you already own a U9 SF, the U45 conversion kit consists of the bolt, barrel, and mag housing.







New Nickel Boron Plated Magazine Housings (Sept 2017) 



























The setup tested in the above video uses a CAR stock with hydraulic buffer and has a combined bolt resistance weight of 1.91 pounds.  With the longer A2 stock, we can use the heavier bolt extension to further reduce the cyclic rate.




STG U Series Case: Custom routed HD foam instert designed to fit the U9, U9 Slow Fire & U45

Case: $475

45 ACP Silencer:  $425







  • (sights not included)
    $11,900.00 Stemple Takedown Gun (STG) U45
     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...

  • Stemple Takedown Gun (STG)  U45/U9 Package
    $13,000.00 Stemple Takedown Gun (STG) U45/U9 Package
    U45/U9 Package This package is a subgunner's dream.  All in one box you've got a complete package to shoot 45ACP with Grease Gun mags or 9mm with Suomi drums and one suppressor to work with both calibers...