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.
The STG Universal 45 (U45) is our newest addition to the U Series setups for the Stemple 76/45 machine gun. It features 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.
This gun is also ideal for use with a suppressor. The extra bolt weight drastically slows the initial bolt blow-back thereby significantly reducing port noise common in open-bolt blow-back SMGs.
- NiB One™ plating is added to the lower assembly, magazine housing, and barrel jacket. This high performance finish look silver / gray in color and adds greater durability and ease of cleaning compared to an anodized finish.
- Select-Fire with Quick-Change Barrel
- Ultra-smooth adjustable-weight low-recoil bolt system with hydraulic buffering for slow M3 Grease-Gun-like shooting performance
- Magazine: M3 Grease Gun (unmodified) 30 rds
- Weight: 9.3 lbs
- Cycle Rate: 500-750 adjustable system with hydraulic buffer, Select Fire (safe-semi-full)
- Stainless Steel Barrel
- Barrel Length: 10.35" threaded .578-28 or 5/8-24
Parts and Accessories Included With Each Gun: one 30rd magazine and multi-tool
The U45 setup uses the same U Lower Assembly, Barrel Shroud, and Low-Recoil 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.
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.
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.
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.
Options and Add-Ons:
- Switch to Law Tactical Folding Stock Setup: + $190
- Add Spade Grip Kit: $420
- 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)
Spade Grip Setups Also Available: https://www.brpguns.com/stemple-stg-spade-grip-kit/
Videos Hide Videos Show Videos
Stemple Shoot 2015
Stemple Memorial Shoot July 2015 featuring some of the old and...
Pre-production testing the the U45 setup for the Stemple 76/45...
BRP Range Day Oct 2015
MACHINE GUN FUN!!!! Stemple Subguns, MG42, Vickers MMG
Stemple 76/45 - BRP STG U45 Setup
45acp Tula Steel Cased Ammo EO Tech sight --------------------...
STG U9 45 tutorial
Stemple Takedown Gun U9 / U45 Conversion Tutorial
Stemple Transferable Machine Gun U9-45 Caliber Conversion
U45/U9 Package This package is a subgunner's dream. All in on...
6 Reviews Hide Reviews Show Reviews
I took my gun to Scottsdale Gun Club today. I have 2 buddies with birthdays today and tomorrow. I let them shoot it to their heart's content. They LOVED it. I just wanted you to share in the joy. You make a great gun that is really fun to shoot.
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 .
This is my first machine gun and it is still in Form 4 jail though I have had a chance to shoot it and I am very pleased so far. Brian provides excellent customer service in getting your gun to your dealer; he is always excited to answer questions and talk about his product. I have ran about 500 rounds through it with no failure and it is very pleasant to shoot. Since my dealer wants to hold only the receiver I have not installed any sights though it will hold on a milk jug at about 30 yards by looking over the barrel and watching your splash. I have done this a few times with a full drum cyclic standing unsupported; I can't wait to see what it will do with an optic from the bipod. It appears to be very well made with wearable parts being affordable and accessible, this was a major selling point for me, I want something I can shoot! My only reservations lie with the suppressor, I don't have much experience with them so my expectations may have been too high, though I didn't get the reduction I was anticipating. Even if I replace the suppressor with a higher end one this is still a great package that I am happy I purchased and that I look forward to enjoying for many years! Thanks BRP!
I bought the U9SF/U45 package because my first BRP gun which is a STG-76 was just amazing! I bought this package to use the U9SF configuration at my local machine gun matches but the funny thing is once I switched over the U45 setup, I haven't switched back!!! I now shoot the matches with the U45 setup only because it is soooooo smooth and I can easily pull singles with it! I think the BRP guns are the best value in the full auto world for those of us who really want to shoot machine guns and not just leave them in the safe as an investment. These guns are super reliable but if you do have problem, Brian is always there to help. He stands behind his product 100%!
I recently purchased A U9/45 which is a two caliber setup in 9mm and 45acp. And a Suppressor.I have been shooting the 9mm setup and when my neighbor tried it, he said its a "must have"!. The I switched it over to 45 in about 5 minutes . And now he has to own one!!! I can shoot 1 inch groups at 25 yards in semi automatic mode, either caliber. I own a few Full Autos and by far this is the most fun. And the fact that its modular like a "transformer" makes it even more fun. Accurate-Super accurate. I can nail steel plates at 25 yards as fast as I can pull the trigger.With only a 1x optic, I can put bullets into the same hole Reliable- No malfunctions at all. Controlleable-Its slow cyclic rate and the bolt and buffer system enables me to keep all the rounds on a IDPA target in full auto!!! Maintenance-Easy. It breaks down and comes apart so effortlessly.Anything that could possible wear out is easy to replace. Service- You will experience the best customer service you ever had.When you talk to Brian , you know he is not reading from a list of answers to commonly asked questions. Great Support!!! Haris
The U45, as advertised, is a very smooth running SMG due to its sturdy build weight, hydraulic buffer, and heavily constructed and proven grease gun magazine that inserts and removes as if it was originally made for the gun. I am an avid re-loader and this gun will handle light loads to heavy loads and function reliably. The gun has functioned flawlessly even after hundreds of fired rounds leaving a very dirty chamber and bolt. The AR pattern stock setup allows me to use a RRA Elite Operator CAR stock on my U45. Brian @ BRP states his guns will shoot steel ammo like brass case, and I have to say I have shot several thousand steel case 45 rounds with no malfunctions or broken extractors. A great feature, especially if you are buying your 45 ammo. In summary, this gun is very well constructed, functions well, and is easily taken apart & assembled. I'm waiting for someone like X-Products or Beta to supply a reliable 50 or 100 round drum for this SMG. If you are looking for a great shooter this gun should be strongly considered. Thanks Brian for an exceptional and affordable 45 SMG.