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Parts wanted and for Sale!

Looking for G-43 fire control parts. Hammer,trigger,sear. This is for one of the projects we are working on. A friend of Gun Lab has helped out with this. Thanks

Continue reading Parts wanted and for Sale!

VG1-5 Preorder Now Available!

We are now taking reservations for out reproduction VG1-5 rifles! Price is $4000, and they will be ready to ship once ATF gives final approval on the design. The get on the priority list, contact Matt or Greg at Allegheny Arsenal – (814) 362-2642. No payment will be taken until the guns are ready to ship.

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1917 trench carbine 3D prints

With the new Bambu P2S printer here I decided to start printing out some of the components of the 1917 trench carbine to verify the design and measurements.

The first part that I printed out and checked is the fire control group. 1b1aI Then used Bambu studio to do a slicing program on it. It was down loaded and printed outDOMU9519

After it was printed out it was checked with actual components to verify proper fit up.

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XEWK4628There are a few minor changes that need to be made, but so far it does not look to be out of spec.

Why it is necessary to run a test part after changes to the program

A number of changes were made to the Sudanese AR-10 lower receiver. Selector stops were added and a new profiling program was used to allow for a better finish around a few areas of the receiver. Then a second lower was machined out of 6061 to verify the changes.  During the process of machining a few issues were notes. The first is that with the new tool path it left on a thin section of metal.

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The magazine release button also changed from an inside cut to and outside cut.

IMG_2228-abxThe other issue that was found was that the selector stops were located in the wrong spot.

IMG_2270aAll the issues have been corrected and checked. Next is to design a logo and write the printing program then start making Sudanese lower semi receivers.

More work on the 1917 Mauser trench carbine

In this post I am going to chat about a single part. The Lock frame stop. This individual part is common only to the carbine. The take down lever. you can see it here in this photo that I found on line.

1This is the part in question.

take down leverHere are the patent drawings that I have been able to locate.

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circle and arrow

lineThis last one is a color picture from a book

Screenshot 2026-01-03 164230All the references are different then the patent drawings and while I have made a solid model of the part I am not sure it is correct.

This is the solid model.

IMG_1936

IMG_1937I am currently at a loss in the proper design. I am not sure what holds it in place and it’s relationship to the magazine release. I am hoping that when I 3D print the lower receiver I can get a better understanding of how this part is actually design and fits into the weapon

 

Japex wire EDM update

I have received a number of questions concerning the Japex wire EDM that I have. Where can you get help repairing the machine, where can you get consumables for it and is there anyone that can help with getting it operational.
I used to recommend Bret at McWilliams sales and service. Well Bret has retired. The person to call now is Kurt at 734-449-4008. The contact email is kurtm@McWilliamsedm.com. I chatted with Kurt in depth and he seems like a very nice guy to deal with. He can help with some spares, board re-build and technical support plus consumables. He also has a couple of technicians to help with troubleshooting. The web page is also back up, https://www.mcwilliamsedm.com/index.html

Hope this helps all the people looking for help with there Japex machines.

1917 Mauser trench carbine

This Project is definitely  interesting one. By using a combination of engineered drawings, pictures and C96 parts to measure I have been able to get a reasonable set of solid models. I started on the lower receiver but it did not take long before I realized the the fire control group holds the key to some of the interior dimensions, information  needed to allow me to draw up the lower and match it with the upper slide assembly.

These are the pictures of the different fire control groups.

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19This is the second fire control group I located.

Action_RHSand finally the third type.

Screenshot 2026-02-04 101353compared to a C-96 fire control group.

DSC_2160ab

DSC_2168accThere are a number of changes between all the models. It was a start and next came the solid model attempts. there are subtle changes between all the models.

The first model1b

1aSecond model

2b2aThe third version.

3b

3aAnd finally the fourth model

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4aWhen all the fire control components are modeled I will work on an assembly. This will allow me to check for proper fit and measurements.

Machining the Sudanese lower receiver op.2 and op3

With op 1 completed it is now time to work on op 2 and 3. First a fixture needed to be machined to hold the machined receiver to all finishing the other side.

IMG_1845-aThe machined op1 piece was set in the fixture and tighten down

IMG_1846All the holes were drilled in op1 so now the bottom was milled off and the receiver was contoured.

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IMG_1851When the second side was complete receiver was removed and debured and parts were checked for proper fit,

 

IMG_1852 IMG_1853The magazine release was checked for proper fit.

IMG_1856Op 3 was conducted, out of house, This is where the magazine housing was edm. it was then checked with a number of magazines to verify proper fit.

Screenshot 2026-02-03 095759

Screenshot 2026-02-03 095838

Screenshot 2026-02-03 095906Next post will be about op4

The Mauser 1917 Trench Carbine

I happen to like the Mauser broom handle pistol. I know it is not well balanced or comfortable to shoot, but it is an iconic and historical weapon. I have a small collection and I am always looking to add to it.

IMG_1994One of the pieces that I would really like to get is the 1917 Mauser trench carbine, as well as a slab side, a 20 shot pistol and a Schnelfeuer. However due to the cost of these pistol it will probably never happen. But the 1917 just might.

It is a classic design

1M1917_Trench_Carbine_LHSThese are a couple of pictures on the internet that I found from an auction site and a web page. This is just  a good looking gun and one that I have never seen in person or will ever own. In fact the only way I will ever own one is to make it myself. This will be a long and interesting project. Most of the parts are not interchangeable with the normal C-96 pistol, but some are close and other are basically the same. To accomplish what I want to do I started by obtaining all the photographs that I can find from books, videos and pictures on the internet and from friends.

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I have also located patent drawings that has helped with some concepts and line drawings.

1766881788490-0870ef3d-3bcf-425c-8ed6-a494d4798628_8-copy

There is also a c-96 cut away in my collection which allows be to study the concept and method of operation

DSC_2239-aDSC_2238-aThen I take pictures from the C-96 parts that I own.

IMG_9434 IMG_9438  

IMG_9435To be able to obtain accurate measurements the pictures need to be as close to 90 degree as possible to eliminate distortion.

DSC_2160aHaving assembled everything I can on a part or assembly I then check for common measurements then I down load pictures into Fusion 360 and using the known dimensions I calibrate the photo and start a basic drawing of the part or component. Frequently it takes a number of different solid models to finally come up with one that has what looks like proper dimensions. This solid model is of the fire control housing and is close to being complete.

Screenshot 2026-01-31 142738

Screenshot 2026-01-31 142841

When the rest of the fire control are completed then an assembly will be made showing all the parts as a completed model. I will then perform an analysis to check proper fit and alignment. Once I am at this point of the design I will make a 3D print of everything and actual do a physical inspection. This is a Schnellfeuer  frame I did a while back.

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IMG_9468When the plastic model is complete I will start the process of making a cut away steel model and check everything again prior to making a complete and functional weapon. Currently I have approximately 60% of the project in a solid model. If anyone knows someone that owns a 1917 trench carbine I would really like to chat with them. I could use some specific pictures and measurements. If I am unable to find a person with one then it will just take a little longer to work through the problems.

machining the Sudanese lower

Now that I am back into the shop it is time to get back to projects that was started years ago. The first project on the list was the Sudanese lower receiver. It had been drawn up in a solid model years back when the modeling program that was used in the shop was Solis Works, however due to the cost I shifted modeling programs and we now use Fusion 360. The model was moved from solid works to fusion 360 but you do not get any of the steps or even a drawing. All you transfer is the solid model. Some changes can be made to the solid model but it is not an easy task.

The first step was to write a cam program. With a friends help this was accomplished.mastercam of AR-10

With the program written it was time to set up the HAAS machining center. All the tools were loaded and touched off and the program loaded.the first op was ready to go.IMG_1699

This is a test run and this receiver will be destroyed due to the material is the wrong material. The actual receiver will be made out of 7075 aluminum and the test piece is being made from 6061 aluminum. 6061 is about 1/3 the cost of 7075.

IMG_1720-aThis photo shows the completion of op1. To deal with all the surfaces on the receiver there was a lot of fine detailed machining, generally referred to as surfacing,  here are a few pictures that shows some of the finer details.

IMG_1841The radius on the front of the receiver magazine housing.

IMG_1738The detail around the magazine release.

IMG_1769A view of the tool paths.

IMG_1840

IMG_1768The next post will be about op 2

 

Back on line

It is hard to believe that I have been shut down or at least stop posting for over 5 years. Life just got in the way and something needed to be set aside. I will start with what is new here. I finally retired, sort of, I still work for the company that bought me out. However, I work a lot less hours and not have time for the shop and making things.

The first thing I did was to start repairing broken equipment and actually get the shops back in some kind of order, still have more to do in that respect and I don’t think that will ever stop.

The major projects that I am currently working on is first and foremost getting up to speed learning the new solid modeling program that we currently use. In the past I used Solid Works but the cost got to be prohibitive and I have shifted to Fusion 360. I started in earnest about 3 months ago. To allow me to learn Fusion 360 I bought a number of books with engineered drawings and finished every drawing at the same time I checked out ever Fusion site that I found and followed them along on how they did certain tasks then I watched the game show on youtube dealing with a contests between individuals using there preferred solid modeling program. After about 2 months and 800 drawings completed I started working on drawings that I had to make them into solid models. I have to admit that actual engineered drawings are a lot harder then anything in the books or on youtube. However, I was able to start working my way through the drawings then it was onto reverse engineering parts using what ever information I could find and  pictures to trace over. this leads me to where I am at now.

A number of the projects that was worked on previously had to be re-modeled. I started with the AR-10 Sudanese lower receiver. With the drawing complete I was able to program the solid model for manufacture, I did have some help with this. The next post will be about making the lower receiver, spoil alert it turn out perfect for the first 4 ops still a couple of ops to complete. My plan is to make 10 receivers and then go on to the next project.

I still need to finish the drawings on the Portuguese receiver but I will finish this project before I remove all the tooling and start on something new. I have no desire to make any more receivers then a limited supply as I have other things I want to do.

It is good to be back in the shop and having fun. There are still a number of projects around the property that need my attention and money so unfortunately not all my time will be in the shop.

 

Axel’s post on the P-38 part 2

The myth of east-german newly manufactured P.38 pistols

PART II

 

Thanks for all the comments on our P.38 post!

Initially we wanted to make a video covering all the questions raised but rather doing another post.

First we will talk about the technical aspects and then the historical context.

So why new barrels?

The old ones were often in poor condition due to corrosive ammo (primers) and steel jacketed bullets.

What holds the sleeved barrel in place?

Most likely interference fit but could also be braced even though no traces visible.

The post war P.38/P1 pistols have a fully sleeved barrel.

At the first variant the barrel liner was held in place only by a cross pin.

That prooved to be unsatisfactory because the barrel liner started to walk out towards the muzzle under intense use.

The second variant features a collar all around (first a smaller, later a wider one) giving the barrel liner sufficient support.

A croatian P.38 inspired gun (PHP) features a barrel sleeved into the barrel block secured with a cross pin. Wasn’t manufactured for long and didn’t see much use.

Years ago at the IWA trade show I’ve seen chinese copies of the SIG P226/P228 with the barrels clearly sleeved in the square block which is forming the locking/unlocking cam and locking shoulder.

PIC  1a

P38 2nd 1as

So with a barrel only press fitted to the barrel block they probably would have experienced issues sooner or later. The barrel on the pictured gun looks brand-new. Wouldn’t shoot any of those much.

First N-series gun being N1000 – correct!

The book we referred to in part one actually lists this number among the guns that are confirmed to exist also including N1120. Which would actually mean that 121 N-series guns were made…

PIC  1b  book cover

P38 2nd 1bs

When looking at the fired Vopo P.38 cartridge casings those markings looked somehow familiar. Took me a while. Well, haven’t fired a Luger P08 in years!

PIC 2

P38 2nd 2s

To the left two shells from the Vopo P.38 – on the right two shells from a 1939 Mauser P08.

So looking down the barrel of two Luger pistols (1939 Mauser right, 1916 DWM left) they have a step in exactly the same spot as the Vopo P.38 barrel in the middle.

PIC 3a

P38 2nd 3as

At the 9mm Luger pistol that step/sealing rim was employed to achieve a better gas seal. They apparently didn’t trust the almost straight-walled 9×19 casing compared to the bottlenecked .30 Luger.

Didn’t worked very well on the Luger tested here since the cartridge casings look a lil bit fouled past the sealing rim. The P.38 though never had that stepped chamber.

According to the book “The Mauser Parabellum 1930-1946″ that sealing rim was dropped at the Luger pistol sometime 1941/1942 since it caused extraction issues with steel cased ammo.

PIC 3b  book cover

P38 2nd 3bs

So did they actually made complete new P.38 barrels in East Germany or conveniently covered the sleeving by arranging the ring joint being in the same spot as the sealing rim at the Luger pistol?

Or if they made complete new barrels why employing that unnecessary sealing rim at the P.38?

Not enough tooling so they used the same chamber reamer they used for the newly made Luger barrels?

BTW, do east German Luger barrels have that sealing rim? No Vopo Luger was available to check.

And why would they have reintroduced that sealing rim anyway since East Germany used steel cased ammo as well?

Speculation at this point. To me it still looks like a sleeved barrel. Esp. those peening marks where the barrel sticks out of the barrel block. Only the new Vopo P.38 barrels have these markings and I can’t even figure out what machining operation would have left these marks and for what reason other than covering a ring joint.

The only way to find out indeed seems to be cutting on of those Vopo barrels. Maybe there is a cutaway model out there that could help to clarify the matter.

Was also looking for deactivated barrels as they are common in Europe with the barrel slotted or otherwise cut open. No luck so far…

 

Now lets go to the historical aspects…

In 1945 the Walther factory was first inspected by American troops and their technical intelligence teams:

https://forums.g503.com/viewtopic.php?t=250311

PIC 4

P38 2nd 4

“The P.38 Pistol” states on page 55 – when on April 4, 1945 American troops arrived at the Walther plant 1,600 P.38/HP were found ready to ship and others still unfinished were assembled and taken as war souvenirs.

So after the Americans took everything they were interested in plus everything else they didn’t wanna leave for the Russians, the second raid happened when the Russians arrived on July 3rd 1945.

And the Russians took everything!

Two aspects played a role. First they wanted to strip the former enemy of all resources that would make Germany a powerful and dangerous player ever again. And they were still traumatized by the experience not having enough guns when WW2 started.

In Stalingrad they only had one rifle for every other soldier. The unarmed ones were supposed to pick up a rifle from a fallen one with a rifle!

The second aspect is that Russia was lacking almost everything regarding modern equipment (by standards back then).

My grandma told me when a group of Russian soldiers was looting the house right after the war one of them was putting his boot in the toilet trying to figure out what that appliance was good for! He simply didn’t know what it was.

Now before the thousands of Russian readers we have will all get butthurt – they had a very few big and some smaller cities in Russia but 95% of the country was just outback. With these primitive farmer’s cottages, unpaved roads, a well in the backyard and a hole in the ground to take a dump!

So they took EVERYTHING they didn’t have back home in Russia. Nothing remotely usable was left!

According to documents of the Soviet Main Directorate “Beutegut” (war booty) 60,149 pianos, grand pianos and accordions, 941,605 pieces of furniture, over 3 million pairs of shoes and 1,2 million winter coats, clothing, bed linen and furs were removed from the Soviet occupation zone (SBZ).

And in 1946 the buildings of the Walther factory were demolished.

That’s why the Walther factory never became a part of the ETW conglomerate (VEB Ernst Thälmann-Werke, founded 1954).

Same story happened with the Mauser factory in french occupied Germany.

There is a very interesting book telling a lot about these post-war aspects:

PIC 5 book cover

P38 2nd 5s

Before the demolition of the Mauser factory was ordered in November 1947 several trains with guns, parts, equipment, machinery etc. were leaving for France.

The question that there was enough experienced personal available. In that book German engineers questioned in 1945 stated that they were already lacking trained staff after 1942! And it would take an estimated two years to get production and R&D to the level before 1945.

And in the soviet zone no one was employed in essential functions who was formerly engaged in  the NSDAP. In contrast to the western Allies who used former cops etc. after a short de-nazification period. That was reducing the available qualified workforce in East Germany even more.

And we are talking about the late 40’s and early 50’s when these “new” P.38’s were made.

According to the aforementioned book East Germany received a large number of WW2 guns from the Russians in 1953. The better ones were reworked the others used for spare parts. Coincidentally all the N-series barrels both P.38 and P08 are dated 1953, most 9/53?

And when the mass production of the P.38 was already planned why having a production line for the way more complex  P08 set up as well? Regarding the limited resources at that time it wouldn’t make any sense.

So could all these “newly made” P.38’s and P08’s be reworked WW2 guns? Absolutely.

Same goes for the Walther PP post-war production. All of those “1001” guns could be reworked WW2 guns. Here you can see serial No. 132270.

http://www.hermann-historica-archiv.de/auktion/hhm50.pl?db=S-50.txt&f=ZAEHLER&c=1153&t=temartic_S_GB&co=1

They for sure didn’t make over 130,000 of these! That’s a rework retaining the original number.

The expert literature often gives conflicting info as well and should be taken with a grain of salt.

“The Parabellum is back” on page 90 shows a list of guns manufactured at Mauser under French control stating that 35,000 P.38 pistols were made until March 1946 and 20,000 Mauser HSc pistols. Manufacturing ended in May 1946.

On the same page a production overview including April 1946 lists only 13,971 HSc pistols!

The book “The Mauser Parabellum 1930-1946″ shows the very same list for the complete time frame till May 1946 but only 3,500 P.38! Which clearly looks like a transcription error. Both books published 2010.

The book “The P.38 pistol” (2017) gives on page 176 a total of 37,855 P.38’s made under french control. Which could very well be since the chart in “The Parabellum is back” on page 90 lists 36,720 P.38 made including April 1946 plus likely a few more made in May before production ceased.

I’m aware there is the wish of every collector to possess something special, only made in very limited numbers, but except for a few special markings not even consistently used, I haven’t seen any physical evidence proving actually newly made (not assembled) P08/P.38/PP  at that time.

Things were changing quickly though in the mid-50’s with establishing the West German Bundeswehr in 1955 and the East German NVA in 1956 …

If any of our readers has more information or other aspects we should cover – please let us know.