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Unfortunately it doesn't sound like something a normal garage-builder could pull off anyway unless all the hard work was farmed out. Most guys I know that like to build semi's from parts kits enjoy doing most, if not all, work them selves. It would have been fantastic to have new-made Tommy guns running Philadelphia Ordnance receivers though. I will have to research the Polston project because I'm curious now. It's neat how different people solve the problems of closed bolt conversions.
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It is not impossible to work on TSMG bolts, hard though they are. You can

GRIND a channel for the Semi-auto firing pin that goes down the center but

it is far from a pleasant experience nor is it, in agreement with Bob, a precise

operation. Definitely not a production activity that I would want in building a semi-auto Thompson and only something, I agree, that home builders who like to hand fit parts would do.

 

Basically building the Polston that way would be like asking someone else to do your homebuild. So I agree, not a likely manufacturing goal or likely to be profitable which is probably what they figured out already. But I hope someone out there proves us wrong anyway--as long as they use Bob's new 80% receivers and trigger frames and NOT old parts

kits.

Edited by T Hound
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I'm brand new to this forum! I just bought a Thompson 1928a1 Savage parts kit (See image below) from the fellow at this link http://gutterrattmac...pson-parts.html. I bought the best he had of everything, including 12 mags and an original WW2 Cutts compensator.

 

Can someone tell me what I bought? The website says, "These are Russian lend/lease guns that were never put into service and stored for 50+ years before being de milled". Did I buy the right parts kit if I want to build a working historical gun?

 

I'm a Type 7 FFL and know absolutely nothing about these, but plan to build it into a working semi auto. I also purchased a demilled 4 cut receiver from another source with the idea of welding it back together, which for me is a piece of cake.

 

I don't want to ask redundant questions in here, as I'm sure it's been asked a million times, but where is the best resource to get good technical information on doing what I want to do? As a gun manufacturer myself www.blackhorsearsenal.com there are no limits!

 

These are posts in another forum about us. My name in these forums is "Gorbachov". See http://www.akfiles.c...ad.php?t=115058 and http://www.akfiles.c...58&postcount=42 along with this one at http://www.akfiles.c...82&postcount=45.

 

http://i682.photobucket.com/albums/vv183/ajh2727/Thompson1928a1SavagePartsKit_zps63a29d38.jpg

Edited by Black Horse
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Thanks Joe...I just regestered at that site! Can you tell me where I can get a CAD drawing of a receiver like the one posted in your thumbnail? If the file is available I'd actually prefer the CAD file itself so we can run it on one of our CNC machine centers! Edited by Black Horse
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I'm brand new to this forum! I just bought a Thompson 1928a1 Savage parts kit (See image below) from the fellow at this link http://gutterrattmac...pson-parts.html. I bought the best he had of everything, including 12 mags and an original WW2 Cutts compensator. Can someone tell me what I bought? The website says, "These are Russian lend/lease guns that were never put into service and stored for 50+ years before being de milled". Did I buy the right parts kit if I want to build a working historical gun? I'm a Type 7 FFL and know absolutely nothing about these, but plan to build it into a working semi auto. I also purchased a demilled 4 cut receiver from another source with the idea of welding it back together, which for me is a piece of cake. I don't want to ask redundant questions in here, as I'm sure it's been asked a million times, but where is the best resource to get good technical information on doing what I want to do? As a gun manufacturer myself www.blackhorsearsenal.com there are no limits! These are posts in another forum about us. My name in these forums is "Gorbachov". See http://www.akfiles.c...ad.php?t=115058 and http://www.akfiles.c...58&postcount=42 along with this one at http://www.akfiles.c...82&postcount=45. http://i682.photobucket.com/albums/vv183/ajh2727/Thompson1928a1SavagePartsKit_zps63a29d38.jpg

 

Did you actually receive the kit used in the sellers web photo? Looks like a nice one.

As a manufacturer who can do anything, why would you want to build a semi?

You will have a machinegun anyhow as soon as you weld the four pieces back together, unless you're incorporating approved denial devices into the weld. Or perhaps you're referring to two separate projects.

I hope you have great success, but suggest learning how to pack the parachute before jumping out of the plane!

Edited by mnshooter
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As I'm reading this you have an FFL and are an SOT. If that's the case I believe you can get Recon Bob(Philadelphia Ordnance) to machine out a 100 % 19 28 receiver since you would be able to possess 1 example. That's the way I would go if I was in your position.

Jim

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It's true we can manufacture full autos from de-milled kits, but we can't sell them to anyone other than law enforcement or the military as samples, which is legally done with a written request by law enforcement or the military as an evaluation sample. Manufactures will do this with the sole intent of keeping it for their own personal collection once the gun has been reviewed.

 

Because the gun can never be sold to anyone other than law enforcement or the military it has zero value in the public market. I make a living manufacturing firearms and a full auto is nothing more than a worthless boat anchor that I can't even pass on to my grandchildren. I lean towards semi-autos because I can flip them at a good profit!

Edited by Black Horse
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Black Horse,

 

I know of no CAD drawings that are available for the Thompson but I've never really looked for any. I bought the M1928a1 "80%" receiver from Phila Ordnance, got a Form 1 SBR and machined it using manual equip. into a semi-auto configuration. Strictly a hobby build for myself. There are some Tommy prints floating around the internet but they are not CAD manufacturing drawings.

 

 

 

Joe

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The kit you bought is a set of original M1928A1 Thompson submachine gun parts.

BUT, there was a law change which banned the importation of barrels. So the barrel

in this kit is not original - which is stated in the sellers description. However depending

on the source the the new "aftermarket" barrel, the quality can be so poor that the barrel

is useless. I have commented on this before. Here is a picture from a previous post about

this:

 

http://i51.photobucket.com/albums/f392/reconbob/IMG_2847.jpg

 

The barrel on the left is an original barrel and note that the mouth of the chamber is

rounded/radiused for smooth feeding. The barrel on the right has a sharp corner and

will cause all sorts of problems trying to get the gun to feed. Here is what a cartridge

looks like after scraping along that edge:

 

http://i51.photobucket.com/albums/f392/reconbob/IMG_2843.jpg

 

Another problem with the aftermarket barrels is the chambers are wrong. They

are chambered like a M1911 .45 ACP chamber which is completely different than

a Thompson submachine gun chamber. Also, quite often with aftermarket barrels

the fins are machined wrong. The part of the grip mount that rests against the

barrel should rest right on a fin - not in the gap between fins.

 

http://i51.photobucket.com/albums/f392/reconbob/IMG_2844.jpg

 

So you should check the barrel and make sure it is correct.

 

As far as the drawing goes, I know of no legitimate CAD drawing or 3D solid model

for the Thompson receiver. I get it - you want to import the dxf data into your CAM

system, but you are not going to find such a file and if you did, somebody went to a

lot of time and expense to draw/create it and I don't think they will just give it away

as a favor.

 

I looked at your website - very impressive. Maybe you will be the guy that makes

a semi-Thompson to compete with Kahr? Good luck with your project!

Annnnd...welcome to the board!

 

Bob

Edited by reconbob
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I'm brand new to this forum! I just bought a Thompson 1928a1 Savage parts kit (See image below) from the fellow at this link http://gutterrattmac...pson-parts.html. I bought the best he had of everything, including 12 mags and an original WW2 Cutts compensator.

 

Can someone tell me what I bought? The website says, "These are Russian lend/lease guns that were never put into service and stored for 50+ years before being de milled". Did I buy the right parts kit if I want to build a working historical gun?

 

I'm a Type 7 FFL and know absolutely nothing about these, but plan to build it into a working semi auto. I also purchased a demilled 4 cut receiver from another source with the idea of welding it back together, which for me is a piece of cake.

 

I don't want to ask redundant questions in here, as I'm sure it's been asked a million times, but where is the best resource to get good technical information on doing what I want to do? As a gun manufacturer myself www.blackhorsearsenal.com there are no limits!

 

These are posts in another forum about us. My name in these forums is "Gorbachov". See http://www.akfiles.c...ad.php?t=115058 and http://www.akfiles.c...58&postcount=42 along with this one at http://www.akfiles.c...82&postcount=45.

 

http://i682.photobucket.com/albums/vv183/ajh2727/Thompson1928a1SavagePartsKit_zps63a29d38.jpg

 

Everything in your kit should be in excellent condition, These barrels are custom made and are to exact GI specs in every way, shape and form, also they have been tested in full auto guns at local gun ranges and rent a machine gun shops here in Las Vegas with great success, my barrels are not cheap aftermarket barrels. If you have any problems please let me know.

Edited by GUTTERRATT
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Black Horse,

 

I know of no CAD drawings that are available for the Thompson but I've never really looked for any. I bought the M1928a1 "80%" receiver from Phila Ordnance, got a Form 1 SBR and machined it using manual equip. into a semi-auto configuration. Strictly a hobby build for myself. There are some Tommy prints floating around the internet but they are not CAD manufacturing drawings.

Joe

 

Joe is Correct. Black Horse the only blueprints floating around are for full auto 1928 and M1 Thompsons. A quick internet search pulls up the usual site, NFA Toys which is at url: http://www.nfatoys.com/tsmg/

Some modifications of those blue prints could give you what you need. All that really need be done is to have denial islands or pins for preventing the full-auto bolts form being installed and the

usual requirement that should the disconnector fail then the firing pin will catch, or forgive the pun, 'pin' the fresh cartridge to the ramp before it chambers. If you

can do that you're in business.

Edited by T Hound
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It's true we can manufacture full autos from de-milled kits, but we can't sell them to anyone other than law enforcement or the military as samples, which is legally done with a written request by law enforcement or the military as an evaluation sample. Manufactures will do this with the sole intent of keeping it for their own personal collection once the gun has been reviewed.

 

Because the gun can never be sold to anyone other than law enforcement or the military it has zero value in the public market. I make a living manufacturing firearms and a full auto is nothing more than a worthless boat anchor that I can't even pass on to my grandchildren. I lean towards semi-autos because I can flip them at a good profit!

+1!

 

Yes, it's fun to have post samples, but that yearly tax does not pay for itself. You gotta build what people can buy, so I do a lot of AK's and Krinkovs to pay for my licenses and keep the bound book from collecting dust.

 

Craig

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This is good news that you are having GI spec barrels custom made. Can you post photos of the barrel threads, chamber, and fins? What are the prices? We are always looking for good barrels... Bob

 

Here you go Bob, I took some quick photos of a barrel. The one on the left is a parked NOS Savage and the barrel on the right is one of my barrels. They are $300.00 ea with or without muzzle threads, I will be working on some Colt style barrels soon both with and without muzzel threads.

http://i547.photobucket.com/albums/hh468/gutterratt-2009/New%20Thompson%20Barrels/DSC00463_zps467fc10c.jpg

http://i547.photobucket.com/albums/hh468/gutterratt-2009/New%20Thompson%20Barrels/DSC00464_zpsc3574170.jpg

http://i547.photobucket.com/albums/hh468/gutterratt-2009/New%20Thompson%20Barrels/DSC00466_zpsdfeebc47.jpg

http://i547.photobucket.com/albums/hh468/gutterratt-2009/New%20Thompson%20Barrels/DSC00468_zpsfe79f8f4.jpg

Edited by GUTTERRATT
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Do you have a showroom in LV or are you strictly online? What is your website url?
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