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)
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.
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.
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.
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.
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
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)
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:
Folding Stock Mechanism:
Single Point Adapter:
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
- Hook or Round Charging Handle (no charge)
- Aluminum Shroud in NiB Battleworn or Steel Shroud (no charge)
- Switch to Law Tactical Folding Stock Setup: + $190
Common Add-Ons (Discounted):
- Add 12.875" Heavy Barrel (not threaded): $135 ($110)
- Add extra bolt 9mm: $360 ($320)
- Add extra barrel with 3-lug adapter: $190 ($170)
- Add extra 9mm barrel threaded .578-28: $130 ($115)
- Add extra mainspring $12 ($9.5)
- Add RF-0 fast fire buffer assembly (for use with 9mm only) with ACE folding stock system: $360 ($315)
- Add Case: $500
- Add Silencer: $700 (Griffin w/ 3lug setup for 10.35" barrel)
- Add Universal Slow Fire Stock and Buffer Assembly for ITP Setups: $360
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
8 Reviews Hide Reviews Show Reviews
I ran onto one of your other customers at Riverbend Gun Club and showed off the U9 as his is still in NFA jail. Was shooting with HK and Mac 10 guys and they all were wowed at the STG. Steered them over to your web site so hopefully you get a few more customers!
BUY IT! I bought this as my first transferable MG. I could not be happier. The fact that you can get new parts in perfect condition for cheap is invaluable. Brian is the nicest guy ever. If you call the number, he will pick up and answer your questions and help you out best he can. I have shot supers, subs, tracers out of this gun. I put a B&T RBS9 can on it. Please not you do have to change the muzzle device to a 9mm tri-lug in order to do that and may need a thread adapter. Full auto suppressed tracers or subs will bring a smile to anyone's face. It makes you feel like you have a Star Wars blaster or a fully automatic crossbow respectively. With subs the bullet hitting the steel is louder than the shot and hearing the ding-ding-ding in full auto is hilarious. When you take this puppy to the range make sure to bring drinks and food because you are going to be there a while and all your friends will want to shoot a couple hundred rounds as well :D I 1,000% recommend buying this gun.
I purchased this as my first MG. I couldn’t have been happier! This is the closest to a “new” transferable you can find and Brian supports this platform with new parts and continued innovation. I’ve owned mine for over 3 years now and have had no issues with the system. Outstanding quality, attention to detail and adaptability. BRP Corp and Brian are top notch in my book! ??
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
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.
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.
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 .
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