MDP-9: AR-15 based submachine gun

Here it is, a submachine gun company Angstadt Arms with a half-free roller shutter

Weapon and firms. In our material about "Family" rifles AR-15 it was a question of the fact that many companies producing this rifle in the version of sports weapons sprang up around the world. It would seem that it is already impossible to find something completely new here, well, unless someone creates on its basis a 12,7-mm carbine. Nevertheless, the enterprising people of many countries of the world do not stop thinking about what else to turn this rifle into. And again, there is everything for this. There are companies that custom make you any barrel lengths, any caliber and with any pitch rifling. There are programs that allow you to make a receiver for this rifle of any configuration on a CNC machine, with any tolerances and any additions generated by your imagination. There are companies that will give you the appropriate coverage ... Or put equipment for this on lease.

Here in this photo you can clearly see that it is very small in size and fits entirely in a small bag ...

There are also two spare shops in it.

In addition, the AR-15 design itself is so simple that it is very easy to remodel it under different cartridges. What different companies also do, redoing it even for a 9,5 mm caliber! But you can actually upgrade the rifle in the opposite direction, that is, reducing the power of the cartridge. Instead of using a rifle, use a pistol cartridge and thus get a submachine gun!

The weapon fits comfortably in your hands!

And this is how the MDP-9 looks with a silencer

The American company Angstadt Arms, so named after its creator Rich Angstadt, who tried her hand at developing PDW weapons - “personal defense weapons”, a simple and effective submachine gun — was engaged in similar design. The company appeared relatively recently, but has already developed a model of a compact rifle UDP-9 under a pistol cartridge. It was created in collaboration with Keystone Armory.

UDP-9. Right view. In fact, this is a semi-automatic carbine based on the AP-15, but made under a pistol cartridge of 9 mm caliber. Moreover, in principle, its device is such that it is possible to use cartridges of 11,43 mm caliber, and 7,62 mm - in short, any pistol cartridges!

The barrel has a length of 152 mm and is equipped with an integrated silencer. According to Rich Angstadt, this muffler can quite successfully drown out the sound of a 9 mm subsonic ammunition. The rifle, and in fact, a carbine or, rather, a submachine gun, since the guns use pistol cartridges, is compatible with all accessories from the AR-15, as well as with Glock pistol magazines, including twin ones. The use of the latter, as well as elongated, is especially important, since the standard magazine of this gun holds only 17 rounds.

This is how the lower receiver looks to it ...

“We realized that people needed a more compact rifle AR-15, and we did it. Moreover, it is compatible with Glock pistols - the most popular pistols on earth, "

- said Rich Angstadt.

And here is UDP-9 in the color “federal titanium”. The pistol grip of the Magpool company, so you don’t have to bother with many details for your own production. Trunks, handles, trigger, shops - all this is ready-made. It remains only to collect, add your own "cherry on the cake", and ... the production is ready!

Further more. Work on the creation of a portable model of the "arch" was continued, and the result was an ultra-compact sample of personal defense weapons AR-9 (MDP-9), also having a caliber of 9 mm and also compatible with magazines from the Glock pistol, but with a patented roller shutter delayed action. It turned out that this is a quite worthy competitor even to the well-known German MP-5 submachine gun from Heckler & Koch, which also uses a roller shutter. Actually, even when this pistol made its debut on the market, its locking system with a semi-free roller shutter just became its main "highlight", which made it a cashier! But time passed, and it turned out that you can do something similar and not worse, but better and more compact!

Well, this is already the “narrative hero” itself - MDP-9 close-up, left view

Ultra-short model MDP-9 - SCW-9, right view

The reason why the German company chose to use a half-free shutter is understandable. According to the terms of reference, it was required to create a submachine gun under the Luger 9-mm cartridge with high firing accuracy, and it was not possible to achieve this when using the free shutter. As a rule, submachine guns fire from an open bolt, which leads to a shaking of the weapon even before the shot. With a semi-free shutter, this does not happen. The barrel at the time of the shot is locked and opens more slowly than in systems with a free shutter. Hence the lower rate of fire and better controllability of weapons by the shooter.

SCW-9, left view

So in this design, the applied semi-free shutter with roller retardation provided, according to the company, both reduced weight and lower recoil, which, in turn, turned their PP into "one of the softest shooting submachine guns of this caliber on the market." Well, you can say anything for advertising purposes, the words are air, they were there and they aren’t there, but in this case there is confirmation of this statement: MDP-9 was already bought in 30 countries. Moreover, it is emphasized that the submachine gun is made on the AR-15 platform and is fully compatible in some parts with the AR-15 / M4. In addition, a number of its devices, such as, for example, collimator sights and Picatinny rails, can also be installed on the AR-15 / UDP-9. It is noted that such compatibility makes this model an ideal weapon system for both professionals and trained citizens who want to have such weapons for self-defense in emergency situations. It is noted that the civilian model is not yet available, but in accordance with US law, it will not be able to conduct automatic fire and will receive a longer barrel. Today it is one of the shortest submachine guns that fits easily in a small leather bag!

Another variety of a very short “arch”, nowhere shorter: SCW-300. The Picatinny rail on the receiver is fully aligned with the rail on the forend, which allows you to install accessories of any length on this sample

Since the buffer tube on the MDP-9, which is characteristic of all arches, is absent, it turned out to be very short and this is its great advantage. The butt is attached behind the Picatinny rail, and there are two options: one folds to the side and the other retractable. The solution is rather unusual, but it allowed to significantly shorten this “product”. That's why they made a case for him. In it, it is conveniently tolerated, without annoying anyone with its appearance, but it is necessary - it is opened, pulled out and shoot!

The barrel of the submachine gun has a length of 148 mm, with a chamber, equipped with Revelli grooves. The reload handle is located on the left, but can also be moved to the right side. Which is again convenient for any shooting public. When shooting, it is also motionless. The Picatinny rail is solid. With a total length of 355 mm, a submachine gun without cartridges weighs only 1633. Its cost in the USA is 2599 dollars. With a butt folding sideways, $ 200 more. Well, why so, it’s clear: the device turned out to be more complicated.

MDP-9 with a butt

The weapon uses the principle of multi-caliber, which is very popular today. It is enough to replace only two parts - the barrel and the bolt, and from this SM it will be possible to shoot cartridges .40 S&W (10 × 22 mm Smith and Wesson), .357 SIG (9x22), and also .45ACP (11,43x23 mm).

In February 2020, a set of parts for 9 mm caliber went on sale, including a receiver and an ultra-light receiver with a length of 127 mm, in the color “titanium terracotta”

To be continued ...

Comments

[Amateur]

The weapon uses the principle of multi-caliber, which is very popular today. It is enough to replace only two parts - barrel and bolt, and this SM can fire .40 S&W (10x22mm Smith & Wesson), .357 SIG (9x22), and .45ACP (11,43x23mm) rounds.

Mr. Shpakovsky once again confirmed that the most expensive thing in weapons is the APPLICATION.

[Kalmar]

Quote: Amateur

Mr. Shpakovsky once again confirmed that the most expensive thing in weapons is the APPLICATION.

Well, okromya barrel and bolt in the weapon there are a lot of things: a receiver, trigger, trigger controls (handle, forend) and so on. Yes, and the butt of the AR-15 is not just a plastic ingot: there is a return there and all that. So the additional barrel and bolt will come out clearly much cheaper than the entire PP assembly.

[Michael HORNET]

The manufacturer’s website says what else needs to be changed and a lover for a new store. And about this model MDP-9 is not indicated multikalibernost. Only Glock and 9x19.
The barrel was taken entirely from Mr5. Apparently, the reclusive group is as similar as possible but inscribed in the “idea” of AR. But in general, a promising thing, it will enter the market well if the price tag is acceptable

[Bad_gr]

......... all over the world, many companies have produced this rifle in the form of a sports weapon. It would seem that it is already impossible to find something completely new here, well, unless someone will create a 12,7-mm carbine on its basis .....

Some of the most popular options for ammunition used in weapons of the AR-15 family

https://modernfirearms.net/ru/sivilian-rifled/ssha-grazhdanskoe-nareznoe/vintovki-tipa-ar-15/
In caliber 7,62x39 and .223 Rem it is also produced here under the name "Carbine Orsis-AR15J"

[Michael HORNET]

What is it for? AK and its derivatives can also be adapted and have already been adapted for firing a very impressive range of rounds.
Another thing is that the same Saiga 9x19 with its design until the GK Company made a shutter stop, worked to put it mildly not resourcefully, and the jambs got out on other cartridges.
It is wrong to assume that this MDP-9 is made “based on (or there based on) AR-15”, there is nothing but a trigger in essence

[Bad_gr]

Quote: Michael HORNET

What is it for?

There was a phrase: "... well, unless someone will create a 12,7-mm carbine on its basis ... .."
What was the photo, where the large-caliber cartridges that are used in the AR-15 family are presented.
What's wrong ?

[Catfish]

Good morning everyone! Vyacheslav Olegovich thanks, I haven’t heard anything about this trunk yet.

... MDP-9 was already bought in 30 countries.

I would like to know which countries and for which units purchased this sub-item.
Since what year is it circulated abroad and in what quantities.
Something, with all my attention, never came across photos of this machine.

[kalibr]

Quote: Sea Cat

I would like to know which countries and for which units purchased this sub-item.
Since what year is it circulated abroad and in what quantities.
Something, with all my attention, never came across photos of this machine.

Oh, Konstantin! Do you know how difficult it is to get even such information? The company website has a Contact us icon. And even there is not always an E-mail, but a whole form that must be filled out. Filled sent ... but no answer. You don’t buy a batch of rifles. Then the answer comes: Hi, I am very glad to hear from you ... take you want. And what is necessary and not in the answer, and not on the site. It was visible to the owner and too lazy to write, and even once. Some pages of weapon websites are simply terrible (who is doing this?), While others are full of ads. Worse ha ha, only the site of the Ministry of Defense of Japan ...

[Undecim]

Have not bought it yet. See my comment below.

[kalibr]

Quote: Sea Cat

and in what quantities.

Company's secret! On Western books, even the circulation is not indicated. And you are the number of machines ...

[Undecim]

Well, you can say anything for advertising purposes, the words are air, they were there and they aren’t there, but in this case there is confirmation of this statement: MDP-9 was already bought in 30 countries.
Yes, have not bought it in another 30 countries.
The firm's website says: "Our flagship UDP-9 9mm AR and sub-machine guns are currently deployed in over 30 countries worldwide."
UDP-9 is the previous sample, with a free shutter without slowing down. It costs 1500 - 1800 dollars.
And MDP-9 just introduced. Those with UDP-9 can buy an MDP-1799 receiver for $ 9 and upgrade their weapons.

[kalibr]

The phrase "guns are currently deployed" means a weapon is offered ... And since it has been offered for a long time, the purchases were made unambiguously. People love everything new! There is such a category of buyers as "last minute people".

[Undecim]

This proposes another weapon, not the one in the article.

[Catfish]

So I was hooked by the fact that de 30 countries (not persons) bought it, but nowhere to see it. In the United States, there are already more than a hundred firms and firms that squeeze out everything that can still be squeezed out of the Arch, and that which cannot either.
"Well, Murka, just a little more ..."

[Kalmar]

It would seem that it is already impossible to find something completely new here, well, unless someone will create a 12,7 mm carbine on its basis

Like this: https://www.tactical-life.com/firearms/alexander-arms-50-beowulf/? )))

[PSih2097]

Quote: Kalmar

Like this: https://www.tactical-life.com/firearms/alexander-arms-50-beowulf/? )))

fun...

Comparison of cartridges from left to right: 5,56 mm, 7,62 mm, .50 Beowulf.

[Vladimir_2U]

Why a carbine? They began to pervert with PP, so let them continue in the same spirit. )))
.50 Action Express (12,7 × 33).

to achieve this when using the free shutter it was not possible ... ... As a rule, submachine guns fire from the open shutter, which leads to the shaking of the weapon even before the shot is fired. With a semi-free shutter, this does not happen.

Some kind of nonsense, the claim is valid for a single fire, but even here the free shutter does not have to be in the open position. Like hard-locking systems, they can open fire with an open shutter.

The Picatinny rail on the receiver is fully aligned with the rail on the forend, which allows you to install accessories of any length on this sample

Logically, otherwise what's the point in them? Apart from the fact that both the receiver and the "forend" (in my opinion this is more of a barrel casing, but here it is debatable), at least in assembled form, one whole.

The weapon uses the principle of multi-caliber, which is very popular today.

Then the principle of modularity, which provides multi-caliber. (Nitpicking to style)

[Michael HORNET]

Yeah ... from the AR-15 in this sample, probably the pistol grip and the trigger. AND EVERYTHING. There is no “base AR-15". Moreover, the trigger is probably used abnormally, from third-party manufacturers (Timney and all that)
The loading handle is standard double-sided on UDP-9, on top. On the MPD-9 on the left, apparently it does not move. In this case, there is no shutter rammer. Not a very reliable solution.
The theme of the placement of the return spring should be described in more detail (obviously it is in front), as well as the automation device. Revelli grooves is such a solution, and why should they if there is a roller retarder? As I understand it, the roller part is identical to MP5, or is it still its own?
A multi-store lover, respectively, with stores from 9x19 will play, because physically a store from 10 mm Glock 20 is larger than a store from Glock 17. Either for each caliber you need your own lover or a plastic insert inside the store’s shaft

[Michael HORNET]

There is no information on the manufacturer’s website about the alleged multi-caliber. There is only one caliber MDP-9, and the store is also of only one type

[Michael HORNET]

Combined the barrel and the shutter from the MP5 with a box in the style of AR-15, for which they even attached guides to the screws to it, it would be logical to use the MP5 store, but it was used from Glock for marketing reasons and Glock’s popularity in the USA
In general, from the AR-15 there is nothing but style) Well, the trigger with a handle
In general, he shoots well and will be in demand in the discipline of the MSS, but only as a battlefield anywhere - hardly

[psiho117]

Dude's tactile grip in the first picture - touches
He holds the PP as if it were a long "black rifle", and now he will go to do the exercise.

[Michael HORNET]

And how else to keep it? Absolutely standard grip, for that the way and the collimator sight is raised

[psiho117]

Quote: Michael HORNET

And how else to keep it?

Um ... normal grip for PP? Storefront, or average.

Perfectly standard grip

This is the so-called. "Magpool" grip for AR-ok with a thin forend.
For firing from short-barreled PP it is of little use.

ps No, I understand that the athletes now have their own views, and they try to stick their tactical gadgets to where it is necessary and not necessary, but apart from one idiot in this photo, I have not seen a single soldier holding a short-barreled weapon with a long grip.
No one.

[Michael HORNET]

Take a trip to any competition and see how Saigu-9 and other MSS are held, those who value the result of their own shooting. Then maybe there would be less cheap aplomb

[psiho117]

Quote: Michael HORNET

go to any competition and see

My phrase was clear:

i have not seen a single fighterthat would hold a short-barreled weapon with a long grip

It’s a pity that it didn’t reach you.
Unfortunately, most modern "sportsmen" are distinguished by cheap aplomb; fighters of any division cause only a restrained smile.

[Michael HORNET]

Athletes shoot at a result that is important to them.
The fighters are trained on a command to shoot in that direction.
It makes all the difference why they hold weapons differently