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. Switching calibers simply requires changing the bolt, barrel, and magazine housing. 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. This gun is also ideal for use with 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.
The package includes the following parts:
• Stemple (STG) U45 Machine Gun with Low-Recoil Bolt System: Variable weight bolt system with hydraulic buffer that allows shooters to customize performance with a variety of different ammo as well as the 45 to 9mm caliber conversion.
• 2 x M3 Grease Gun Magazines
• U9 Converison (bolt, barrel, magazine housing)
• 2 x Suomi Drums
• 1 x Suomi Magazine
• Custom Hard Case
• 45 ACP suppressor for use with both 45 ACP and 9mm setups
• foregrip, multi-tool, & barrel locknut/muzzle cap tool
(sights not included)
Select-Fire with Quick-Change Barrel
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 and Mag Housing
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, to use common suppressor
U9 (SF) Conversion Data:
Select-Fire with Quick-Change Barrel
Ultra-smooth adjustable-weight bolt system with hydraulic buffering
Magazine: Suomi KP31 25 rd, 36 rd, 50 rd magazines and 40 rd & 70 rd drums
Nickel Boron Plated Bolt and Mag Housing
Weight: 9.3 lbs
Cycle Rate: 550-800 adjustable
Stainless Steel Barrel
Barrel Length: 10.35" threaded .578-28 to use common suppressor
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.
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.
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.
Spade Grip Setups Also Available: https://www.brpguns.com/stemple-stg-spade-grip-kit/
Linkup with our other customers via our Stemple STG Facebook Group: https://www.facebook.com/groups/110088872841613/
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 U9 Slow Fire 5 14 2015
Machine gunner in this video is competitive shooter Emily Nich...
First Time Out: Stemple 76/45 - STG 9mm Setup
A customer set us these videos of his first time shooting his ...
Stemple 2017 Shoot
July 2017 Stemple Shoot
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
10 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 finally had time today to go to granite state indoor range to try the new sub gun. I brought 10 x 71rd drums (bought from numrich) 5 loaded with 115gr magtech, Remington, federal, sellor & ballot, and Speer lawman, and the other 5 with 124gr versions of the same. (I had started to buy drums and ammo before I committed to buying the gun and haven’t even tried the two drums that came with it.)
I left the recoil system as it came, RF-1, no suppressor, and with the exception of one drum having a weak spring and not feeding the 6th to last round from the drum(bumped drum a bit and then remaining 6 all fed fine), I fired 710 rounds at 25 yards full auto with not a single jam, cough, hiccup, or burp. More accurate on full auto than some 9mm carbines I’ve shot. Smooth cycling, very easy to control. I used my Trijicon ACOG 4xRCO.
Last but not least, it was actually very easy on the brass, no dented rims or necks. I’ll have no problem reloading for this gun.
No regrets whatsoever, almost wish I’d bought 2
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
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.
Met with Brian May 2018. Got a tour of the company and shop. Then to the range for a few hours of shooting. The gun sells itself. Bought it that day. It is still with the SOT, a friend of mine, and we had it out at the range today. I've fired an array of automatic weapons and this is my favorite. You should have seen his 13 year old daughter accurately placing the rounds on target. The gun is awesome. Thanks Brian.
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!!!
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%!
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!