I guess that I am late to the party here in 2022. I just wanted to say that dad, a WW2 combat veteran, always referred to the MP-40 as a "Burp-Gun." I grew up with that phrase back in the fifties and sixties. Crud, now I am well into my own 'sixties.' --Old Guy

I never in a thousand years imagined they'd make something like this...it's a dream come true!!

The mag well and receiver are one piece!! Doesn't hurt a thing to hold the mag well.

Really appreciate your comments on the way you hold the MP40. I naturally hold it the same way and never gave it much thought. Like hearing about your experience with customer service too.. Recently I had a number of issues with Buds Gun Shop online and after weeks of calling and sending numerous emails they still haven't bothered to respond. Customer Service is very important to me for obvious reasons. Glad to hear American Tactical has good service because I plan to make some purchases.

I contacted American Tactical Imports about the bulging primers. They stated the ammunition could be too hot of a load, which with the 115gr 9mm factory load isn’t very likely. The second possibility is that it is too light of a load. They suggested I try a 124 grain bullet to rule out ammunition. If it is not ammunition it could be a head space issue.

I've been shooting a 30 cal M1 Carbine Enforcer Pistol, with an 11 inch barrel for about 45 years now. No folding stock, NOT an SBR. . . .You need a longer sling. . . .You should adjust your sling so it goes around one arm and your neck (typical WWII carry), but tighten it up to the length for a correct "cheek weld" when you aim. It's going to hang high on your chest, and not look cool on your hip. . . .Push the gun away from you, (you do it at timestamp 2:42 .) the sling pulls tight, and you are going to hold a much steadier sight picture. . . .Pushing away with the sling slows down your rapid fire, but more shots will be on target.

Sounds like ATI stepped up to the plate with a new gun shipped to you.

I have one ,and it performs flawlessly.....hope your luck changes,and the way your holding it ,is the way I use it too.

From what I understand the reason for the light primer strokes is because they used the same parts for the 9mm as they did the .22. Just not string enough.

I am so excited about mine I just purchased one the only thing is I half to wait 7 day's for background check and update my HQL card because living in the state of Maryland the MP40 is considered a handgun , let alone I also half to drive up to Pennsylvania to get the 25 round Magazine for it perfectly legal because I'm buying the Magazine out of state had to do the same thing for my AR-15 because Maryland has a 10 round magazine restriction , so ridiculous.

very nice item . and you are holding it in the correct way . Do not hold the mag.

I had a problem with a mushy trigger as well charger kept falling out. I went to eBay and bought a trigger piece and fixed that issue I called ATI and told them about the charger and they told me to use some lock tite on the charger handle and it solved that issue. For 500 dollars it is an ok gun. It usually stays on my wall for a conversation piece.

You are actually holding it correctly

FWIW, the sling was originally mounted on the right so it wouldn't interfere with the operating handle and mag release.

I have seen WWII actual photographs of German soldiers in the field with the Sling installed both ways so perhaps the way (The German soldiers) attached the Sling was personal preference,rather than they were told,this is the only way to attach the Sling.

i do not own one but would like to, i always thought about the lack of a fore grip and holding the magazine to be a weak point of the gun but the way you hold it seems best. the germans had a lot of cool stuff. clint eastwood could shoot 2 at a time in the movie "Where Eagles Dare".

Your the first guy I've seen that holds it right.

Do they make steel-cased cartridges? Any of the original wartime rounds I've had were laquered steel.

been running winchester 115 in mine and it hasn't jammed since I got it.

What's the reason it doesn't come with a folding stock? Some stupid SBR b.s.?

I noticed that your sling is rather relaxed compared to the Leather replica Sling I purchased that is quite stiff because the leather is new.I read that the original slings were dark brown and that with use,being out in the field that they would turn almost black .Would you think that something like saddle soap would help soften the leather and perhaps darken it up a bit as well?

I live in Canada, all we can get is the .22 version. So jealous

Cool gun!! Reenactors will like this gun once they get a folding stock for it!! Most squad leaders in the German army would have had the mp40 or mp38, something that has been missing in reenacters arsenals!!

Yeah, I think you're on the right track of thinking it's a headspace issue. You already know from experience that if you're running some factory +P, the primers still shouldn't look like that. The wonky primer bulges combined with the occasional light strikes, really sounds like a headspacing issue to me as well. Chambers could've been cut a little too deep from the factory or the breach isn't completely shutting flush as far as it should. Maybe a very small flaw in the machining, like uneven cuts somewhere? Could be a super tiny or virtually invisible burr around the chambers mouth or breach face somewhere? Or something along those lines. 🤔 Definitely perplexing. Esp cause it's not a prob being reported around other owners. Could've been a small interference with the tooling, an obstruction of some kind that resulted in a batch of a few parts that were manufactured just a bit "off". Like one of those practically undetectable little things. Either way, it's still a cool gun. Not a complete deal breaker IMO. Unfortunate, but not a total bust. The cool factor def makes up for it.

Mac Miller's long lost brother lol

Cool weapon enjoy

That sling should have come with a second little leather loop to secure the bit that sticks up.

to strong of recoil spring can cause the problems you have been having, and so the strong force of the spring make it hard to gas blowback and when it does it sends the firing pin forward very hard. I would leave it cocked for a few days to let the spring come more relaxed. hence loosing a bit of spring tension. also bad ammo feeding is mainly due to not being a strong enough spring in the mag, simple fix. just insert a stronger spring into the mag, or stretch. but that wont be a good fix/temp . As said by (iloveshootingshit) also you could have problems with the power of the rounds..The MP40 doe's need to have good strong blowback to operate correctly, so I would get NATO-spec ammo as it is very close to WWII German ammo specs, and a bit more powerful than US SAAMI-spec ammo.. hope this info is helpful.

the primers are striking light because the round is probably headspaced incorrectly also causing them to bulge after being fired. buy a set of gauges

I wish they would make a 8mm kurz stg44

Try different ammo. I have several 9mm PCC's and each likes its own ammo. I have a Suomi M31 SA, KP44 pistol SA, 2 Sterlings SA carbines TI and TII, UZI carbine and PPS43 pistol SA. You may find it likes cheap steel case Tula or any number of brass, maybe in 124gr or lower...like I said they are all different. Find the right ammo it likes and then stock up on it. My next 9mm pistol will be the GSG MP40 and I fully expect for it to be ammo sensitive...its just part of collecting these converted guns. Also some of these like to run wet (oiled), others do not...you just need to figure each out.

I want one of those! Ammo would be cheaper and easier to get. And if I put good quality ammo in it, i think i should get good results.

Yo love it

I’ve got the stamp to make the MP40 legal. Next question is where we can get a left hand threaded piston for my suppressor??? The stamp from ATF was to allow a folding stock!!

No issues with mine. You should use a high end Ammo. Live or Blank

Noticed on ejection that spent cartridges go all different directions; maybe loose extractor or ejector??

Do you have a link to were I can by a sling like yours? Thanks...

I had to wait 6 months for them to decide to send me a new one.

sweet rifle

It could be the ammo?

Without the folding stock it's a no-go for me

interesting. I have a question on primers bulging, is it really the gun that causes it, or the round itself? What does? Would the primer bulge if you fired it in other pistols?

Bulging primers almost looks like hot rounds. Bulging normally means excessive pressure, wonder if you are using +P or hot rounds. As for the light primer strike at the 6 minute mark, it almost looks like the magazine was not seated all the way, the bottom looks tilted back a bit.

Shame you cant use the folding stock like on my umarex BB version.

You should do a video on the Auto Ordnance Thompson Pistol. Not a lot a videos on it.

Where did you get that display stand from?

are you able add a that collapsible stock, like the originals had?

They should extend the mag well for a front grip.

Interesting. At the display you have the sling properly installed then you have it backwards when your firing. What the heck did you do that for?

As a tec9 owner I can relate to a degree.

But is single action?

Who made the sling?

Its not a pressure issue, its poor fitment of the fireing pin in the bolt face. Probly why you're getting some light strikes as well.*edit I'm assuming they wouldn't send you two guns with incorrect headspace as that would be the first thing they should check . Also assuming you're not using handloads.

Could be finicky with ammo. Try different stuff. Buy gauges and check headspace too.

i don't know if you still own this firearm, but i have an example of one, and in the 4 or so years ive owned it, ive only sent about 1 magazine through it, incredibly unreliable in my experience. any suggestions?

Can you bump fire it from the hip ?

Where can I get those acrylic rifle stands?

WHY CANT WE GET THE FOLDING STOCK???

=slowmoshots= =I stare at the screws and grind my teeth=

Compare this with thr PPS43

Needs true cartridge stg44

THEY KEPT YOYR ORIGINAL?

Iloveshootingshit I must get one its the closest thing to owning a ww2 version of the full auto MP40

How much does one of these cost. I love it

No folding stock?

The ammo you are using looks like it’s could be a possible problem

NO FOLDING STOCK????

is it also full auto??

INSTRUCTIONS ARE CLEAR YOU CANT HOLD THE STICK MAGAZINE AS A HANDLE WHATSOEVER!

Watch the videos of the ATI MP40 9mm Improved parts and upgrade trigger... You Tube channel Jakes Custom Gun Parts and I sell them on Gunbroker.... search ATI MP40 improved trigger...tks Jake

Go to auto ordinance and try a tommy gun pistol!!!!

Magazine “well” not weld.

You hold it like your supposed to do... I dont think anyone gave you flak about how you hold it unless you did so by the whole mag.

Poles

Why doesemt some company do this for Lee Enfield's or something

Otomatik at

Bump fire it.

didn't need the porn intro

I pa zavendsueshm

try some different ammo

I think the CZ Scorpion Evo 3 is a better sub gun.

Lame video Armature verging

Poorly made "replica". While it is made in Germany, it is NOT of German quality. The bolt and springs appear to be made of recycled tin cans. The charging handle falls off easily. The design is NOT even close to the original. Why they didn't make a true copy of the MP40 is beyond me. They could have converted the open bolt design to a closed bolt jut as UZI did for it's semis. Save your money. Buy a Stribog if you are looking for a budget close quarters 9mm you can actually rely on if there is a bump in the night.