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Posted: 12/2/2019 3:43:06 PM EDT
Working on building up a post sample MP40 with some original tube parts, and the only thing I am missing is the rear sight and rear sight spring (have a repro rear sight base from Indianapolis Ordnance, the original sight was the only part missing- little did I know THAT would be the hard part to find, LOL!)
I have scoured for a quite a while but with no luck, anyone know where I could source a MP40 rear sight and spring? I currently have a Beretta 38/44 rear two position flip sight that looks very similar and is about the right height and that I can modify to fit the dovetail, and will most likely work, and I am sure I can get a bit of spring steel from McMaster to fab up a spring, but if any one knows a source for the original that sure would make for a nice, complete post sample with all original parts.  Also, I can weld on the repro rears sight base from Indianapolis Ordinance, but it is obvious that the originals were (somehow ?) riveted on from the underside- I have not found any pics of an original rear sight base prior to installation, and there are no obvious rivet heads on top so I am trying to figure out if they had studs integral to the base, small screws of some sort, or some other method I have been unable to identify. I have also heard that in some instances the rear sight base was brazed on, but that is only from internet rumor. Any input and help is appreciated, and yes, once it is done I will post up pics!
Sven Manticore Arms |
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Posted: 12/2/2019 8:55:42 PM EDT
[#1]
Clearly you should put a micro-red dot on it.
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Posted: 12/2/2019 10:06:49 PM EDT
[#2]
According to the images available on Google... the seems to be 3 major types of attachment.... side pinned, where the base is pinned through the sides, one in front of the sight and one to the rear... second method, 2 screws through the top of the base, again, one through the front and on through the rear of the base. Third, the entire base is brazed on with no pinning whatsoever. I guess whatever you find in terms of rear sight base would be the way to attach it. Whether it would be historically accurate for your parts kit would be another question though....
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Posted: 12/3/2019 12:08:40 AM EDT
[#3]
Quote HistoryQuoted:
Clearly you should put a micro-red dot on it.
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Posted: 12/3/2019 12:47:05 PM EDT
[#4]
I think at this point I am going to braze the base on, or at least give it a try. Not a lot of expereince with brazing, but already have a torch and can grab some brazing rod this afternoon, and know how to apply heat to metal.
Sven Manticore Arms |
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Posted: 12/3/2019 12:52:19 PM EDT
[#5]
Don't warp the tube. Maybe solder instead of braze? Less heat.
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Posted: 12/3/2019 2:28:01 PM EDT
[#6]
Original MP-40 sight bases were essentially "riveted" to the tube. MP-38's used 2 screws from the top. The 2 protruding studs on the underside of the base fit thru 2 holes in the top of the tube, then "peened" over.....it can be done thru the sear cutout in the bottom of the tube. Problem is that new manufacture tubes (not stamped/rolled like the originals) are thicker along the top rib ….that combined with the already "peened" studs on takeoff sight bases make it next to impossible to use the original method.
Hi temp silver solder works best...…. I've cut replacement sight springs from the spring steel in Mauser stripper clips......worked great |
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Posted: 12/4/2019 1:37:42 PM EDT
[#7]
Quote HistoryQuoted:
Original MP-40 sight bases were essentially "riveted" to the tube. MP-38's used 2 screws from the top. The 2 protruding studs on the underside of the base fit thru 2 holes in the top of the tube, then "peened" over.....it can be done thru the sear cutout in the bottom of the tube. Problem is that new manufacture tubes (not stamped/rolled like the originals) are thicker along the top rib ….that combined with the already "peened" studs on takeoff sight bases make it next to impossible to use the original method. Hi temp silver solder works best...…. I've cut replacement sight springs from the spring steel in Mauser stripper clips......worked great Great idea on the the spring material, thanks! I will definitely go that route. And for mounting, brazing it is... |
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Posted: 12/11/2019 12:19:08 AM EDT
[#8]
How about an original 38 sight for $29? Plus $9 shipping.
https://www.ebay.com/itm/WW2-German-Rear-Sight-38/153655632109?hash=item23c696e0ed:g:UAsAAOSwMxJbzD1h |
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Posted: 12/12/2019 1:04:08 AM EDT
[#9]
Quote HistoryQuoted:
How about an original 38 sight for $29? Plus $9 shipping. https://www.ebay.com/itm/WW2-German-Rear-Sight-38/153655632109?hash=item23c696e0ed:g:UAsAAOSwMxJbzD1h Sven Manticore Arms |
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Posted: 12/12/2019 2:30:06 PM EDT
[#10]
Quote HistoryQuoted: Oh dang, a great find...I already welded on the rear sight base repro (could not get enough heat with MAPP to braze and don't have a oxy/acetylene setup) an dmodified a Beretta 38/42 rear sight, but that is incredibly tempting, thanks for the find! Sven Manticore Arms |
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Posted: 12/12/2019 3:18:36 PM EDT
[#11]
Quote HistoryQuoted:
Be glad you passed.....that MP-38 site isn't original ......nor are any of the MP38 or MP40 parts that Ukranian seller has listed. It's not even a decent repro Quote HistoryQuoted:
Quoted: Oh dang, a great find...I already welded on the rear sight base repro (could not get enough heat with MAPP to braze and don't have a oxy/acetylene setup) an dmodified a Beretta 38/42 rear sight, but that is incredibly tempting, thanks for the find! Sven Manticore Arms |
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Posted: 12/12/2019 6:06:16 PM EDT
[#12]
Quote HistoryQuoted: Airsoft parts? |
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Posted: 12/12/2019 9:33:22 PM EDT
[#13]
The mp38 parts are very likely from a Ukrainian company called "Automatic Plus". They make a pretty exact copy of the mp38, as well as several other german ww2 guns. All functional and firing.
https://www.thefirearmblog.com/blog/2018/04/05/historical-firearm-replicas-by-automatic-of-ukraine/ https://automatic.plus/models/automatic-mp-38/ |
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